It’s on the underside of the HPOP. Three other common front of engine leaks that will send oil down the front of your 7.3 engine are: A 7.3 powerstroke oil cooler leak usually originates from the oil cooler o-rings or an oil cooler gasket. If it was a basic automotive vacuum gauge your needle may only deflect 5% of the gauge's scale during an excessive vacuum (or positive pressure) reading. When oil leaks from the main seal, it usually occurs at the connecting point between the engine and transmission. Sadly, the labor cost to remove the engine and install a new gasket on the oil pan is going to make you want to drive your Powerstroke off a cliff. But be careful, you can over-tighten it pretty easily and then it won’t seal again. Do not take it to the car wash or use a high pressure hose. Run your fingers around the head of the plug and see if there’s fresh oil. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal combined with the drying, hardening and shrinking of the main seal. The vehicle is done and a new PCV valve was replaced. Yes good point, I actually found some very good discussions on here about the different methods people are using to read crankcase pressure. You will pay between $650 and $850 for this replacement. Simply add BlueDevil Rear Main Sealer to your vehicle’s engine oil and your rear main seal leak … The reservoir should have oil all the way up to within 3/4″ to 1″ from the top of the inspection plug. Head to your local auto parts stores and pick up BlueDevil Rear Main Sealer. On the end of your car’s crankshaft is a mechanical seal. I asked because I didn't know what range and precision of a tool you were working with. I may have to try that depending how apparent the issue is initially in the bay. What are some good next steps to take? Step 2: Check Your Cover Gasket and Valley Pan. Hey guys, I want to make sure I cover all my bases here so this vehicle is once and for all repaired. But, Don’t get me wrong, There is still a need for a variety reasons: There is no alternative seal available; Doing a repair or rebuild and you just want to keep it original; The rope seal may be used in a timing cover; Many water pumps have used rope type seals Find your oil filter and trace it to the oil cooler assembly. 3 Powerstroke Oil Leak on the Front of the Engine. It’s a good idea to check the valley frequently. Hope this…. Dead Head Diesel is compensated for referring traffic and business to these companies. Attached to the front of the turbo pedestal (See diagram above), the EBPV can make it seem like the pedestal itself is leaking. There’s one between the the HPOP reservoir top cover and bottom oil reservoir — the HPOP “Reservoir Gasket.”. While not common, the rubberized seal at the back of the engine, sealing the crankshaft at the back of the engine block where it bolts to the flywheel, will eventually dry out and leak. Rear main seal leak: Troubleshooting Idle the engine. Leaking diesel that runs through the engine valley and down the back of the motor. Or, as many others have tried, just let it leak, put silicone over it, or even JB Weld the entire thing in an attempt to slow the leak down. Without this working correctly, the transmission won’t run smoothly, and your engine will falter. After looking a little deeper into it I found that although I did the original repair four months ago, it was only 4000km ago. It’s where numerous “leaks” start and it could save you a long walk to the nearest service station. I did not diagnose the leak the first time around just performed the repair so just to be sure when I had the transmission out I turned the motor over by hand. Another “top-of-engine” oil leak location is around the inside of the valve cover gaskets — toward the valley. So, if you wake up in the morning and head out to your beloved 7.3 Powerstroke only to find it straddling a pool of its own lube, here’s where to start…. A stop leak product cannot work everywhere in an engine to fix the leak. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal and the drying, hardening and shrinking of the main seal. He tested for excessive pressure (PVC System) and said it checked OK, but it probably would check OK with the RMS hanging out of the back of the block. And you’ll have to R&R the turbo pedestal to replace them. Could you please clarify this point for us. If you’ve discovered a rear main seal leak in your vehicle, seal the leak today before it’s too late. Customers who bought this item also bought Industry-leading education in technical and business management for industry professionals. And just like the valve cover gasket on the driver’s side, the outside of the passenger valve cover can leak at the gasket as well.eval(ez_write_tag([[300,250],'deadheaddiesel_com-leader-1','ezslot_9',133,'0','0'])); Unfortunately, anything more than an annoying — small — oil pan gasket leak is going to require engine removal to fix. See if you can visually see exactly where your oil is coming from. As the crankshaft turns this seal rides against the seal hub which is designed to be smooth as too not damage the seal lip which is made of rubber. Bar's Leaks Concentrated Rear Main Seal Repair restores the seal to like new condition and also contains additives to stop leaks in severely worn seals and crankshafts. More likely oil in your valley is draining out the rear of the valley and down around the bell housing, appearing to be a rear main seal leak. That is good :) Thank you. Transmission is out and I find the rear main to be pushed out. At higher RPM and blipping the throttle I get positive pressures up to 1 inches of water. It’s seated and sealed with an O-ring.eval(ez_write_tag([[300,250],'deadheaddiesel_com-leader-2','ezslot_10',137,'0','0'])); That IPR o-ring can wear out or get damaged in a poor installation and then leak as well, causing oil to seep into the valley, eventually making its way by gravity down the backside of the engine. Dead Head Diesel is a participant in various affiliate networks, including AvantLink, CJ, and others. Step 1: The First Thing to Look For. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal combined with the drying, hardening and shrinking of the main seal. April 20, 2020 by Tom Harbid. I would also investigate the air filter and the maintenance and service records to see if proper maintenance has been performed in the past Honorable mention goes to the EBPV (Exhaust Back Pressure Valve). On the way, that fuel collects dirt and oil from the valley. Clearly does not get driven very far or much. However, just as many 7.3 oil leaks are due to inherent manufacturer design and component choices. Finally, the rear main is one of the LAST places that fail or leak on 7.3’s.Because of the placement of the high pressure oil pump, a 7.3 HPOP leak can appear to be a rear main seal leak. There’s a small drain hole at the back of the valley on the passenger side. I dont have any other suggestions other than what you have already checked. Get 6.4 Powerstroke oil change and capacity, type, and interval numbers you'll need to change it yourself. If you have … If you have a few drips on your driveway in the proximity of the front crankshaft seal, you might have a camshaft position sensor leak. 7.3 oil leaks at the HPOP gaskets are also pretty uncommon. This pressure test would be faulty in that case. Choose from 354 Jeep Wrangler repairs and services for model years 1990 to 2021 to get a RepairPal Fair Price Estimate™. Yes checked crankcase pressure at higher RPM's, also blipping the throttle wide open, and also under load. The end plug o-rings can wear out and leak or the Loctite 277 can fail and cause the plugs to get loose and leak.eval(ez_write_tag([[300,250],'deadheaddiesel_com-large-mobile-banner-2','ezslot_8',136,'0','0'])); The valley sits on top of the engine block behind the HPOP and ahead of the turbo pedestal. Try torquing down the valve cover bolts to spec before diving in to replace the 7.3 valve cover gaskets. Curious to know what the mileage is on the engine. Checked crankshaft end play to be within spec(actually was under spec!?) If it starts to crack or otherwise malfunction, you will be left with an oil leak. I can definitely say this is typical for chevy 2.4 ecotec engines, the pcv system freezes over and tends to blow the seal out. I've owned over a dozen diesel pickup trucks in my life and always worked on them myself. Low-mileage inactivity, as much as high-mileage engine wear, can cause a rear main seal or timing seal to leak. Personally i would not start this engine again without first replacing the PCV valve. Other Entailing Services. I would think this is a sign of excessive pressure in the crankcase. Crankshaft rear seal/rear main oil leak replacement How much does a crankshaft rear seal/rear main oil leak repair cost? I would also suspect a faulty crankcase breather system. I could visually see oil leaking past the seal and was happy with that. We’ll detail them below…eval(ez_write_tag([[580,400],'deadheaddiesel_com-medrectangle-4','ezslot_4',141,'0','0'])); A leaking HPOP O-ring won’t necessarily throw a CEL or cause noticeable drivability problems until enough oil is lost to reduce flow to your 7.3 injectors. Amade of either rubber of silicone, this main seal is crucial in keeping the liquid where it should be, and typically requires a replacement to be fixed when getting damaged The rear main seal replacement … What is the range of your manometer you used to test crankcase pressure? Therefore, to gain access to the rear main seal, a mechanic will usually have to remove parts of the transmission and nearby components. It's a great read(as usual). I would replace the PCV before starting then retest as quickly as possible to confirm now in spec. When I worked at the dealer I used the evap machine with the inches of water gauge as this procedure was part of several bulletins followed by specific specs using that tool. I know that it can cause misfires and vct codes to come up, but again, for Chevy, not sure on infinity. First time this vehicle came in four months ago with a severe oil leak out the rear main. The older PCV valve…. The o-rings in these are known to leak as well. As a quick fix, you can try tightening that nut a little. Here are some other leaks that will fill your valley with oil.eval(ez_write_tag([[300,250],'deadheaddiesel_com-large-mobile-banner-1','ezslot_7',134,'0','0'])); A very common oil leak is at the turbo pedestal o-rings. Did you put any type of sealer on the seal when you replaced it ? There are several culprits responsible for a leak in the valley. I was also thinking if checking the crankcase pressures with a rear main that is faulty would that not throw my readings off? I would definitely say take a look at that crankcase pressure once again. Took another reading of crankcase pressure and at idle have about -1 to -2 inches of water. For examples, an engine oil additive can never be able to stop a leak near the front seal, any sort of cork gasket or rear main seal. 3. The most common sign of a leaking rear main seal is oil spots on a driveway or garage floor where the vehicle is parked for long periods of time. The most common passenger side 7.3 oil leak is where the oil dipstick enters the oil pan — the dipstick adapter. Still, there are other HPOP leaks that can rob your engine of power or leave you stranded on the side of the road. Replaced rear main, oil leak fixed but no diagnostics were done to verify the cause of the leak. Bar’s Leaks Concentrated Rear Main Seal Repair restores the seal to like-new condition, and also contains additives to stop leaks in severely worn seals and crankshafts. On most modern engines, the seal’s failure is due to a condition inside the engine or a component connected to the back of the engine. Fast forward and it is once again leaking out the rear main. Consequently, It was common for rear main rope seals to leak. Sometimes the plug on the rear of the HPOP leaks (See location in diagram above). I've owned over a dozen diesel pickup trucks and always worked on them myself. We talked earlier about HPOP leaks — probably the most common top-of-engine oil leak. Then it runs out the valley drain hole and down the rear of the engine, making it appear to be an oil leak. That is correct, seal is from the dealer. In some cases the CCV — Crank Case Vent — can leak oil into turbocharge pipes which eventually finds its way into the valley. Is there anything else I'm missing here? Oil may leak from multiple areas of the engine, but the rear main seal is one of the most frequent sources of a leak. Compatible with petroleum, semi-synthetic and full synthetic motor oils; Renews worn seals with no risk of damage or eventual corrosion Your oil gallery rail plug at the front of either cylinder head. BlueDevil Oil Stop Leak. I'm the owner of Dead Head Diesel. Look to this location after you’ve inspected the oil discharge hose fittings, the rear plug and/or the “non-serviceable” plug. The other plugs on the oil gallery rails are the oil rail end plugs. Rislone Rear Main Seal Repair is one of the only products of its kind on the market specifically designed to solve rear seal oil leaking problems. The crankshaft is the main driving force in the engine. Can’t say much for infinity, but I’d definitely take a look there again for sure. EBPV (Exhaust Back Pressure Valve). Check for leaks around the ends where the oil cooler attaches to the engine or at the o-rings in the center of the cooler.eval(ez_write_tag([[300,250],'deadheaddiesel_com-large-leaderboard-2','ezslot_5',132,'0','0'])); Here’s a quick video on 7.3 oil cooler removal and reseal: Of course a leak at the valve cover gasket on the outside of the driver’s side can run down and cause a mess as well. That’s because an untimely slip and you’ll drop the internal backing to the nut and probably the o-ring down into the oil pan. I know exactly where you are coming from. I asked because I have seen guys put RTV on those type of seals and it will allow the seal to slip out of the holder after a while. have you guys seen anything similar? Top of engine oil leaks can also come from the two plugs installed near the rear of the engine — into the head.These two cylinder head plugs face into the engine valley and are oil drain ports. They’re located just below the valve covers. How to Diagnose a Rear Main Seal Leak. 6.4 Powerstroke oil capacity is huge by "normal" gas truck standards. I have continued to use this method with from what I can tell, or know to be good results. I'm Steve. I'm Steve. If you find even a small amount, don’t take chances — a preventative o-ring change on an HPOP rear plug leak will save you a walk home.eval(ez_write_tag([[250,250],'deadheaddiesel_com-banner-1','ezslot_11',130,'0','0'])); Though the “non-serviceable plug” is a very uncommon leak, it can happen. That pulley will throw oil all over the place. Go ahead with the rear main seal replacement, then test for excessive pressure. The HPOP fitting o-rings (Amazon Link) are a well-known failure point and cause for a leaking HPOP. Another one — the HPOP Mounting Gasket — sits between the HPOP and front engine cover. For instance, NO LEAK 20401 is the best option for fixing gaskets, while the Bar’s Leaks 1040 repair fluid works best on the rear main seal. After replacement I would hook up gauge and tape to the windshield then go for a ride watching crankcase pressure. Manometers are also mentioned, always learning! Do yourself a favor and if you see even a little oil leaking around them, perform some preventative maintenance—change the o-rings before they fail and dump all your 7.3’s engine oil into the valley. Would a manometer be more effective? From my poking aroung on the discussion boards I found out many owners with this do not fix it as they seem to know it's difficult to eliminate (some say a poor design). Over the years, this … 7.3 Powerstroke common oil leaks are especially well known. After the repair there were no more spots under the vehicle and…. Alas, some of the products we featured not only stop the sealing but can also reduce noise engine and prevent corrosion, like the Lucas Oil 10278. There are 4 of them in 2 different sizes — two (black) o-rings on the top, and two (yellow) O rings on the bottom. Replaced rear main, oil leak fixed but no diagnostics were done to verify the cause of the leak. You can check for slow oil leaks from the 7.3 HPOP by checking the HPOP reservoir level (With the engine OFF!). Manometer is now just a nickname for an electronic or mechanical strain gauge which reads very low pressures, as the term originally referred to a…. Specially designed to seal rear main leaks Better than conventional stop leak on ts on all other leaks Bar?s Leaks® concentrated rear main seal repair is a unique blend of polymers, lubricity agents, anti-oxidants and conditioners that stop leakage and restore engine seal performance. When you buy through links on our site, we may earn an affiliate commission. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft & seal and the drying, hardening and shrinking of the main seal. With a so-called “Valley of Death” leak, 7.3 engine oil will pool up in the “V” between the two banks of cylinder heads and valve-covers. If one of the plugs comes loose or the o-ring fails, it can leak a lot of oil into the valley. It likes to leak a lot also. BlueDevil Rear Main Sealer permanently stops rear main seal leaks. As an Amazon Associate, I earn from qualifying purchases. Thank you Jose, I will take a second look at the pressure with a good seal in place. But I’ve watched the engine-in gasket replace videos and I don’t know about you — I’m not comfortable with that job … yet…. Hi Shani, in your original post you state that the original rear main seal was leaking badly but do not specify if it was pushed out of place like the replacement seal was. Rislone Concentrated Rear Main Seal Repair restores the seal to like-new condition and also contains additives to stop leaks in severely worn seals and crankshafts. It likes to leak a lot also. Oil leak from the oil cooler seals. Our solution is a completely liquid additive that won’t clog or harm any other components or seals in your engine and will stop that annoying (and costly) rear main seal leak … Thank you James, I will proceed with this and see what I get. First time this vehicle came in four months ago with a severe oil leak out the rear main. The boss has asked the customer to return for a follow up inspection and other then that wanted to ship the vehicle as they wanted it for the weekend. 7.3 Powerstroke CPS O-ring Leaking. That’ll cause a loss of power and/or injectors that won’t fire. Thanks guys! I would be worried the seal could blow out again during testing. If you think you have a CPS o-ring leak, Diesel O-rings sells a very inexpensive o-ring to reseal it. The pressure could be in spec at idle but not at 3000 RPM. LMAO. The 7.3 HPOP reservoir gasket to the front cover or the reservoir top cover gasket. There are special oil additives on the market that are designed to swell the rubber of the rear seal and cause it to expand, thus sealing off the leak. 6.4 Powerstroke Oil Change and Capacity Secrets. I…, I'm not sure why you pointed out the thead details to me, I thought I'd demonstrated that I had read and understood them in my several replies. And, yes, you do see oil stains under … Hi Paul, the original seal was not pushed out, just leaking badly. It is most likely a crankcase with excessive pressure. Here are the five best 7.3 starter replacements to fit any budget. Repair fees for rear main seal replacement need to be high enough for the car shop to afford to purchase and maintain that much equipment. Have you measured crankcase pressure at higher engine speeds? A leaking o-ring in at the HPOP rear plate is very uncommon. Are you sure the rear main seal is leaking and not the upper oil pan? But, by the time a CEL comes on, you’re about to start walking. It sits low inside the engine block, usually just above the oil pan (also known as the sump), and counterweights splash oil to lubricate the main … Hi Tony, I did not use a manometer just a gauge. That hole has caused many needless (and expensive) rear main seal replacements as oil from the top of the engine appears to be coming from the bottom of the engine and the rear main seal. Now you need to pinpoint where the leak is coming from. Didn't see in any post but could have overlooked this…you are using Nissan /infinity seal I hope. I live in California. It can make sense to encounter other maintenance while you are replacing the rear main seal. But if I have too I will try it and see what happens. (https://youtu.be/ZhTSfPspm9Y). Quiz the customer to see if they frequently use gravel roads in their travels I had a customer with a Nissan Sentra a few years back with the cylinders worn out at 83,000 miles they lived in the country…, This vehicle has 55,000km on it, 10 year old car. The rear plate requires an 8″ pair of c-clamp pliers to remove the retaining c-ring. You mentioned the crankcase pressure was tested with the rear main seal already pushed out. Other symptoms include a gradual loss of power due to lower pressure from the HPOP’s oil delivery system.eval(ez_write_tag([[580,400],'deadheaddiesel_com-box-4','ezslot_3',129,'0','0'])); The injectors actuate by using high pressure oil in the oil rails. Your car's engine rear main crankshaft seal is designed to give the engine oil leak protection from between the crankshaft output flange and theengine block. Hey guys, I want to make sure I cover all my bases here so this vehicle is once and for all repaired. Ford's stock starter may not be the best starter for 7.3 Powerstroke diesel pickups. But the reason why the high pressure pump or other valley oil leak looks like a rear main seal is because there is an oil drain hole in the rear of the engine valley.7.3 valley oil leaks will cause oil to run down the back of the engine and appear to be coming from the oil pan or rear main seal leak. BlueDevil Rear Main Sealer is a great repair for timing cover leaks. Common Oil Leak #1 – 7.3 High Pressure Oil Pump Leak, Common Oil Leak #2 – 7.3 Powerstroke Oil Leak on the Front of the Engine, Common Oil Leak #3 – 7.3 Powerstroke Oil Leak Driver Side, Common Oil Leak #4 – 7.3 Powerstroke Oil Leak Passenger Side, Common Oil Leak #5 – 7.3 Oil Pan Gasket Leak, Common Oil Leak #6 – 7.3 Powerstroke Oil Leak on Top of Engine, Common Oil Leak #7 – 7.3 Powerstroke Oil Leak in the Valley, Common Oil Leak #8 – 7.3 Powerstroke Oil Leak on Front of Engine, Common Oil Leak #9 – 7.3 Rear Main Seal Leak. Now, this is where I share everything I've learned about DIY diesel maintenance, troubleshooting and repair. I'm always wary of using longer flexible tubes for this application in case the tubes flex and skew my readings. A rear main seal leak is likely the most expensive oil leak any 3.0 or 3.3 liter V6 owner will be tasked to repair. Bar’s Leaks Concentrated Rear Main Seal Repair restores the seal to like-new condition, and also contains additives to stop leaks in severely worn seals and crankshafts. eval(ez_write_tag([[728,90],'deadheaddiesel_com-box-3','ezslot_12',151,'0','0']));Many of the more common oil leaks are the result of poor maintenance and outright neglect over time. If the engine in your car is very old and the seal is leaking, it is most likely the result of age and use. If it’s simply the EBPV, you probably don’t have to remove the turbo and pedestal to install a new o-ring.. A lot of oil in a short amount of time points to the EBPV (Exhaust Back Pressure Valve) on the turbo pedestal or more-likely the HPOP line fittings. The most common 7.3 Powerstroke high pressure oil pump (HPOP) leak happens when one or both of the HPOP O-rings on the oil line fittings fail.eval(ez_write_tag([[300,250],'deadheaddiesel_com-medrectangle-3','ezslot_2',138,'0','0'])); The fittings “click” into the HPOP and the heads and require a special tool to remove and reattach. Lucas Engine Oil Stop Leak is an all new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines! I bet you will see higher than normal readings, then fix the crankcase pressure concern. Thank you Bill. Asked if he used any sealer on the replacement seal and SV answered no, which is the correct answer. This seal ensures that engine oil does not leak out. It sounds to me like the PCV system is restricted and the weak link is the rear main seal. Another Tech. Step 4: Alternative Options. The IPR-Injection Pressure Regulator is screwed into the back of the HPOP-High Pressure Oil Pump. Riffraff Diesel sells a replacement rear plate o-ring seal. link to 5 Best Starters for a 7.3 Powerstroke, link to 6.4 Powerstroke Oil Change and Capacity Secrets, 7.3 Powerstroke high pressure oil pump (HPOP) leak, Riffraff Diesel sells a replacement rear plate o-ring seal, Ford 7.3 Powerstroke diesel. If the pressure’s low, they won’t operate efficiently. Just add to the engine oil to restore and seal gaskets. Dead Head Diesel is reader-supported. You’ll see a large nut on the rear passenger side of the oil pan. Decisions that require preventative maintenance and parts replacement over time. The BlueDevil Oil Stop Leak is another excellent formula. Not aftermarket Thanks for the input I will try to investigate further. Spray the pedestal down with some simple green. You know, the diesel "friendly" state. For a more detailed look at fixing HPOP oil leaks, including parts and torque specs, see the article on Fixing 7.3 HPOP Oil Leaks. Any fluid that leaks into the valley can escape through that hole, out the rear of the valley, and down the back side of the engine. It’s a more complicated job to replace the internal dipstick o-ring. Step 3: Is It Worth Fixing? The rear main seal is a crucial part of the oil and engine involved with the inner workings of your vehicle. The most labor-intensive seal to replace on any engine is the rear main seal. Using dye. Even the valve cover gaskets deteriorating and seeping oil can cause dirt and grease-mixed oil to get caked all over the valley. Key Benefits. Careful though — some of the more common 7.3 oil leaks turn out to be fuel leaks. In this case, installing a new rear main seal of any design should end the problem. Replacing the non-serviceable plug isn’t trivial — it requires fuel bowl and HPOP removal before you can replace it. This seal is located between the engine an… Check the o-rings on these very large oil rail plugs for leaks. Average Rear Main Seal Repair Cost – To Have A Mechanic Replace Rear Main Seal. They are to be installed dry, except the lip a little lube there. But if a rear main seal leak appears when the engine has been recently rebuilt or is fresh, you'll have to track down the cause. There are no shortcuts or quick fixes if the seal has expired. Rear Main Seal Replacement by Bill Schroeder The rear main seal leak among small block owners is a very common problem. Took another reading of crankcase pressure and at idle have…, Update: New seal and PCV valve replaced. Then clean the pedestal before deciding which one — turbo o-rings or EBPV — are leaking. Ford Super Duty pickups have become notorious for dripping oil. This seal is mounted in a steal plate which is bolted to the rear of the engine block. And that will require engine removal to retrieve it. Fast forward and it is once again leaking out the rear main. How to replace Rear Main Engine Seal if vehicle has no removable flange around seal. After searching the Internet for more hours than I spent fixing my trucks, I created this site to keep track of all that info. and crankcase pressure was checked with no pressure showing to be in the crankcase. He said the replacement seal was pushed out, so there's definitely a seal-related issue here. Clean out the valley of all the oil and dirt using some simple green and a garden hose. BlueDevil Rear Main Sealer is a versatile rear main seal fix for seals that are dried, cracked, or shrunken due to age or use. So pull over immediately and inspect your engine valley for oil. Down below 500psi of startup pressure, and they might not fire at all. Now the very question arises whether a stop leak product can fix an engine oil leak or not? The oil from the CPS can drip down on the damper pulley. (paraphrased statement to Michael Wan) - It's not a misidentified leak somewhere else, the OP noted the seal is pushed out, Yes, first time the oil leak was so severe it essentially undercoated the vehicle and left puddles. The Rear main seal is the last place you should check if you see engine oil coming down the backside of your engine. Thanks. Sure some YouTubers have shown how they do it. There are also the large oil rail plugs on the back of the heads.