the car quest one has a steel insert and all but impossible to over torque. Re: How tight to tighten oil pan bolts?? I'd drive the car and see small drips under the car. I crawled under and tightened the pan bolts and found that the two rear-most bolts were stripped. Also be careful not to misread the post above that says the torque is 80 in pounds. Overtightening the oil pan bolts may deform the pan surface, and then it will never be possible to stop it from leaking until you get a new pan. I have a 1990 190E 2.6 and it started leaking oil like a sieve from the rear of the pan. I've always used a windage tray. I checked above where the oil pan meets the block all around and it's dry, there's no build up from what you'd see after oil has been leaking there for a while. I found two replacements that were about .5 cm longer and worked. this would eliminate these kind of problems as far as the gasket getting messed up. Tighten the oil pan bolts with a 1/2-inch drive ratchet to the manufacturer's specifications for your oil pan. To me it seems that the front three oil pan bolts are leaking (see attached picture). I think that the one i boutght coust $26. I have dealt with slight oil leaks with my 3 different 440 engines. How to repair oil leak in car engine drain bolt. In a few cases, I have used lock washers on the bolts. How to repair oil leak in car engine drain bolt. I'd get it on the lift and see oil on the bolt heads, dripping off to the floor. Suggest to be very careful to usethe correct torque if you try tightening the bolts. I still got leaks. Tighten the bolts in a pattern starting from the middle of the pan to the outer edges, along the long sides of the pan -- tighten the short sides of the pan … Discovered the other day an oil leak at the front of the engine. That’s INCH pounds. Wiped clean the area and gave her a day then looked again. When I brought the car in the week before last, the shop re-torqued the bolts on my oil pan, put dye in my engine oil and cleaned the affected areas. Please do not do this. I thought the oil was leaking from my transmission, but the shop said it was coming from my oil pan gasket. Most oil pan bolts are tightened to between 25 and 27 foot-pounds. I like to tighten the bolts until the stop tabs get close - then wait 10 minutes for the rubber to compress - then I go back and complete the tightening sequence. There is a high probability of breaking a bolt off in the block, and then your expense significantly increases. Unfortunately, even after tightening the bolts, oil continued to leak when the engine was warm. When they rebuilt the engine they recommended and installed a competition oil pan gasket. 4wd Hardware and CarQuest sell nice neoprene and steel 1piece pan gaskets. I'm stumped, the leak is the same as it was before I did the gasket and I've done it twice. The oil cooler block off piece did not stop the leak. When installing the pan with a new gasket, progressively and CAREFULLY tighten all the bolts until the taps just come in contact with the transmission housing (see image below). Oil pan gasket leaks are extremely common in E90 series xi's. For this reason, many hobbyists who see dirt and oil film on the outside of an oil pan or valve cover with a cork gasket believe that it is leaking, and consequently over-tighten the hold-down bolts. The bolts are aluminum, torque to yield bolts. The most left bolt and the middle one is dripping quite a bit of oil. This will not stop the natural wicking process that is responsible for the dirt accumulation. Off to the manufacturer 's specifications for your oil pan bolts are to. They recommended and installed a competition oil pan gasket leaks are extremely in. 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