4.0 oil leak solutions

[SupermanIce-J]

X2 on buying the good gaskets..

Fel-Pro Perma-dry!

Also Id bet the orings are shot on your oil filter adapter which can be a PITA to get off... Its a 4.0 its probably going to keep leaking no matter what you do...

Yes sir... the o-ring set is like 5-8 bucks at the dealership and you need a t-65 torx bit. NOT A SOCKET!!! a socket will not fit inbetween the bolt and the framerail with a ratchet wrench.

[clean4drxj]

common issues.. vavle cover gasket, oilfilter adapter(fixed), rear main/oil pan. the problem with the vavle cover gasket is that it's rubber and it hardens over time/heat so next time around I'm going with cork. As for the rearmain seal... I'm not sure what I'm going to do and at this time it's not terrible but I hate leaks!

[clean4drxj]

Fel-Pro Perma-dry!



Yes sir... the o-ring set is like 5-8 bucks at the dealership and you need a t-65 torx bit. NOT A SOCKET!!! a socket will not fit inbetween the bolt and the framerail with a ratchet wrench.

YJ's dont have an oil filter adapter

[OWEN]

it's a bitch to get right but usually people don't torque down the two rear bolts on the valve cover and it will seep out there making you think it's a rear main seal

Yea, it looks like that may be happening

If it is leaking that much then it should be easy to figure out where it is coming from.

If you are doing an oil pan gasket do the rear main at the same time, only an extra 15min from there.

But I don't understand why couldn't find the leak? Brake clean air hose clean it off and drive it. Could be more than one spot.

Also check the PCV vent is not clogged. just blow air through it you will brake it if you try to take it off.

And buy the good gaskets not the stupid cork ones they never last

Well I forgot to say, I change the oil every 4-5k, I check it sometimes, but have not really tried to find any leaks. I just noticed it was very "moist" this last oil change, definately more than one leak so I figure I would try to hit all the trouble spots I can, nothing seems too hard to get at. Thanks for the input

[WAD357]

Fel-Pro Perma-dry!



Yes sir... the o-ring set is like 5-8 bucks at the dealership and you need a t-65 torx bit. NOT A SOCKET!!! a socket will not fit inbetween the bolt and the framerail with a ratchet wrench.

My renix had a regualr Hex head