Does anyone know the torque spec for the center shaft on the oil cooler? It is the center piece that has a nut on it that the oil filter screws onto.

Is this for the L98 filter housing thing that has coolant pumped through it?

I don't know the spec... I tightened it a bit tighter than I would have an oil filter.

Quote:

Yes, it is for an L98. That piece unscrewed when I removed the oil filter last. Luckily, it is just held in place with a snap ring, so I didn't have to disconnect the oil cooler and drain the block to get the filter off.

I know that adaptor piece on the block can crack, so I didn't want to over tighten it. But also didn't want to have a leak or for that piece to come loose again.

I tightened it down pretty good with my ratchet and 27mm socket. I probably should have replaced the gasket while it was loose. I've read people using a regular oil filter gasket instead of the over priced oil cooler gasket from the dealer.

I found the oil filter gasket to be slightly smaller, but it still worked great in lieu of the rock hard original gasket that was on there.

Although now my oil cooler/warmer is installed on the garage shelf, next to the smog equipment.

I guess shops don't like using a torque wrench. Had the dealer change the oil when I first got it. They tightened the drain plug down too much causing it to leak.

So, I had to get the oil pan replaced. According to the book, you have to remove the oil cooler. So, I say the shop didn't tighten that piece down enough, which was why it ended up coming loose later on when I went to remove the oil filter.