Originally Posted by
dcskmail
If you can identify that the breather covers are leaking , re-torque your valve cover bolts to 7 ft lbs , then remove and re-seal both breather covers with a good RTV sealant it's also the age of the sealant and not just the mileage that leads to failure. Here's a video on our M112 engine also shared with Mercedes
https://www.youtube.com/watch?v=m316C8PmCcY&t=827s
We had better your statement a little clearer.
You use 7 ft lbs on the large cover bolts and 4 ft lbs (48 in lbs) on the (2) or (3) 6 mm aluminum screws. If the aluminum screws have been replaced by steel screws as the aluminum screws are only used once, I would still use 4 ft lbs, remember it is the material and size of the thread that the screws are screwed into that figures into the equation as well.
Using the aluminum screws more than once is risking breaking a screw in the cover.