L99/LS3 engine oil leak - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

hunter1660 · 01-15-2022, 05:41 PM

If there were no sign of oil leak when the oil was changed….check oil filter for tightness or maybe the seal on the filter is faulty…?

Pkeen · 01-15-2022, 06:31 PM

I agree with valve cover as well as the valve cover bolt rubber gaskets ,as I see oil on top of cover !

1JEWLDSSRS · 01-16-2022, 01:05 PM

Quote:

Originally Posted by GenesisCoupe

Thank you sir. I went to the car wash with lifter and cleaned that area. Drived for a 100 miles but nothing happens. I will replace both gaskets anyway. Thanks for assisting

If you do replace them, get the OEM ones as some of the "aftermarket" ones don't seal properly, sen that before.

1JEWLDSSRS · 01-16-2022, 01:09 PM

Quote:

Originally Posted by hunter1660

If there were no sign of oil leak when the oil was changed….check oil filter for tightness or maybe the seal on the filter is faulty…?

I have had this issue MANY times after an oil change at the dealer with their AC Delco filters, they don't seal sometimes and leak. I get my oil changes for FREE, so that is why I get it done there, plus I get to sit with my tech and chat while he does it. He is a really knowledgeable and good guy. Worked on my baby ever since day 1!!! lol. He does what I can't do..

1JEWLDSSRS · 01-16-2022, 01:11 PM

Quote:

Originally Posted by Pkeen

I agree with valve cover as well as the valve cover bolt rubber gaskets ,as I see oil on top of cover !

Yep, these rubber grommets do sometimes crack after a while and oil does seep out from them.

GenesisCoupe · 01-22-2022, 04:27 AM

Sirs, let me explain.
Oil changed after using oil flush to clean the system. In next few days I found oil signs coming somewhere from the top, I attached some pictures on the previous page. I washed car from the bottom side and oil signs disappeared for a week. Now I can see a little signs again.

Could it be just valve cover gaskets / grommets or L99 engine has a metal gasket in the middle side of the engine? Could you please advise..
I ordered valve cover gaskets with grommets but doubt about maybe there is an other gasket deeper in engine...

GenesisCoupe · 01-22-2022, 10:33 PM

Quote:

Originally Posted by 1JEWLDSSRS

I have had this issue MANY times after an oil change at the dealer with their AC Delco filters, they don't seal sometimes and leak. I get my oil changes for FREE, so that is why I get it done there, plus I get to sit with my tech and chat while he does it. He is a really knowledgeable and good guy. Worked on my baby ever since day 1!!! lol. He does what I can't do..

I use blue filters but now ordered black ones, both ACDelco. As u know blacks are much better

GenesisCoupe · 02-20-2022, 05:59 AM

Today I found that oil leaks from the left side cylinder head gasket, from the corner.

At the same time I found that also leaks something like oil cooler... Anybody could help with the needed gasket ? Is it oil cooler leaks or I'm wrong? I attach images

If yes, which one I should replace ? There are 3 types of gaskets in rockauto, "Oval Port", "Center tube; Dual round port" and "Seals Two Pipes".. I belive its a gasket with 4 holes named as "Center tube; Dual round port".

https://www.rockauto.com/en/catalog/...r+gasket,10422

01-15-2022, 05:41 PM	#15
hunter1660 Drives: 2011ss/rs camaro Join Date: Sep 2011 Location: florida Posts: 1,261	If there were no sign of oil leak when the oil was changed….check oil filter for tightness or maybe the seal on the filter is faulty…? __________________ . OBX LTH,Rotofab,Magnuson Heartbeat.AEM wideband, HP Tuners

01-15-2022, 06:31 PM	#16
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 293	I agree with valve cover as well as the valve cover bolt rubber gaskets ,as I see oil on top of cover ! __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

02-20-2022, 05:59 AM	#22
GenesisCoupe Drives: 2011 Chevy Camaro 2SS A/T Join Date: Feb 2020 Location: Swiss, Geneva Posts: 71	Today I found that oil leaks from the left side cylinder head gasket, from the corner. At the same time I found that also leaks something like oil cooler... Anybody could help with the needed gasket ? Is it oil cooler leaks or I'm wrong? I attach images If yes, which one I should replace ? There are 3 types of gaskets in rockauto, "Oval Port", "Center tube; Dual round port" and "Seals Two Pipes".. I belive its a gasket with 4 holes named as "Center tube; Dual round port". https://www.rockauto.com/en/catalog/...r+gasket,10422 Attached Images

01-22-2022, 04:27 AM	#20
GenesisCoupe Drives: 2011 Chevy Camaro 2SS A/T Join Date: Feb 2020 Location: Swiss, Geneva Posts: 71	Sirs, let me explain. Oil changed after using oil flush to clean the system. In next few days I found oil signs coming somewhere from the top, I attached some pictures on the previous page. I washed car from the bottom side and oil signs disappeared for a week. Now I can see a little signs again. Could it be just valve cover gaskets / grommets or L99 engine has a metal gasket in the middle side of the engine? Could you please advise.. I ordered valve cover gaskets with grommets but doubt about maybe there is an other gasket deeper in engine...