New Oil Pan gasket leaking?

Dustin Jackson

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Hey guys, it has been about 3,000 miles since I did the AFM delete and everything has been fine so far.

Recently I have noticed that after a good drive my Tahoe will leave 2 drops of oil on my driveway.

1 drop coming from the drain plug, I think it just needs a new drain plug gasket.

The other drop is coming from my front diff, I got under it with a flashlight and can see the oil pan is leaking front of the motor mount on the driver side. I can tell because those oil pan bolts near the front have beads of oil on them.

My oil pan gasket is a brand new felpro installed about 3,000 miles ago.

What are your guys thoughts on this? Should I just attempt to retorque the bolts or did I bend my oil pan? Maybe got a piece of gunk on the gasket when installing and it isn't seated right? Or maybe didn't use enough RTV where the block meets the front cover and the oil is traveling backwards?

Strange it went almost 3,000 miles before showing up.
 

Trey Hardy

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I would check over the bolts again first don’t strip them but make sure they are good and tight did you cross back and fourth when you were putting it back on? Not sure if it makes a difference but seems like it would be the thing to do so everything goes on evenly so it don’t pinch the gasket or warp the pan? Just idea
 

Trey Hardy

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Mine leaks out the rear main seal and god knows where else but it’s not bad enough yet to worry about maybe if I don’t drive as much and I stretch my oil change out I might have to add a quart between the change but here lately with the long distance driving I haven’t had too
 

Foggy

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When the timing cover assembly was off...... if you didn't get all the surfaces perfectly
clean and then just the right amount of RTV when you reassemble it can leak..
Also, be careful NOT to over tighten those bolts.. They are pretty small...
I think when I did mine, the torque figure was like 110 in lbs Which is
just good and snug with a 1/4 drive ratchet
 

Rocket Man

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Re-torque and follow the specs, 110 in lbs sounds about right, make sure you’re not using ft lbs or you’ll strip them for sure. Oil pan bolts always seem to loosen after first installed at least once. Same with trans pan bolts.
 
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Dustin Jackson

Dustin Jackson

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When the timing cover assembly was off...... if you didn't get all the surfaces perfectly
clean and then just the right amount of RTV when you reassemble it can leak..
Also, be careful NOT to over tighten those bolts.. They are pretty small...
I think when I did mine, the torque figure was like 110 in lbs Which is
just good and snug with a 1/4 drive ratchet
@Foggy @Rocket Man I don't think I over torqued them too much, I set my ft lbs wrench to lowest setting which was like 12 or 15 ft lbs. I will retorque them and hope that they just got a little loose from expanding.

I will say that 1 of the long ones near the trans is completely missing now but this is far from my leak... lol
 

Rocket Man

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@Foggy @Rocket Man I don't think I over torqued them too much, I set my ft lbs wrench to lowest setting which was like 12 or 15 ft lbs. I will retorque them and hope that they just got a little loose from expanding.

I will say that 1 of the long ones near the trans is completely missing now but this is far from my leak... lol
Dont torque them to either 12 or 15 lbs. because that’s 144-180 in lbs and at the bottom of the wrench’s range it’s not accurate anyway. I just checked and my 02 is supposed to be 109 in lbs or a little over 8 ft lbs. You have an aluminum block, correct? Hope you didn’t strip the one that’s missing. Buy a smaller torque wrench that does in lbs.
 
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Dustin Jackson

Dustin Jackson

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Dont torque them to either 12 or 15 lbs. because that’s 144-180 in lbs and at the bottom of the wrench’s range it’s not accurate anyway. I just checked and my 02 is supposed to be 109 in lbs or a little over 8 ft lbs. You have an aluminum block, correct? Hope you didn’t strip the one that’s missing. Buy a smaller torque wrench that does in lbs.
Iron block
 

drakon543

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might have tweeked the pan a bit. when i do an oil pan or trans pan i use rtv on the threads. rtv will generally add enough resistance on a bolt that it wont back out. green locktite should work aswell as its the lightest of them but as rtv usually works for me and your already using it so its handy.
 

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