Mystery oil leak

[spina74]

Ok, so out of no where I got a nasty oil leak on my 6.0. It's bad enough to lead me to believe it was an RMS, but after removing everything, the back of the motor was bone dry, as well as the area above the bell so its not the pressure sender. The sides of the motor are dry and I can't detect where the leak could be from. I replaced the drain plug just incase and no difference. Are there any spot common for an lsx motor to leak from?

[wretched73]

Are you sure it is a leak and the car isn't eating oil? You can't see the oiling coming from anywhere? Did you check the oil filter?

[spina74]

Are you sure it is a leak and the car isn't eating oil? You can't see the oiling coming from anywhere? Did you check the oil filter?

I can't see where the oil is coming from. The oil filter is tight and dry but the rest of the under body is covered with it and sitting there with it idling I don't see a leak

[edpontiac91]

At this point your going to have to jack up the car and spray down the entire undercarriage with a heavy duty degreaser, let it sit for awhile and then use a power washer and blast everything clean.
After it drys, you need to put it onto a lift and while it's running you may now see where fresh oil it coming from. Looking for an oil leak with everything covered in oil is almost impossible to detect.
If it still does not show itself, you need to drive the car for a day and then put it back up, because it seems like it is spraying out and the force of driving it is coating everything.

[spina74]

Cleaned the whole undercarriage down and ran a UV dye in the motor the front oil plug next to the alt was leaking so i pulled that and put thread sealer on it, and took the car out for a drive and saw its still leaking after i parked it. It is still leaking from the rear driver side of the motor...any ideas before I put the car back on the lift tomorrow to check.

[edpontiac91]

Could be a freeze plug.

[greenformula92]

whatever it is it is most likely happening above idle. i had a timing cover leak on a TPI car that was like that, at idle it didn't leak a drop, but bring the idle up, OP comes up and it would start flowing out like crazy

[Firehawk441]

It is still leaking from the rear driver side of the motor...any ideas before I put the car back on the lift tomorrow to check.

Check the gasket on the oil blockoff plate located on the oil pan just above the oil filter. Very common to leak from there. GM redsigned this gasket from the original version.

[spina74]

Forgot to update it was the hex style galley plug above the block off plate