ever since i bought my ls1 SS (with 20k miles on it) It has the tendancy to lose about 1-2 quarts of oil between every 3k miles. However there are absolutely no leaks anywhere, and no smoking. There is also no buildup of any oily substance on my back bumper that could be coming out the exhaust.

The engine runs like new, with great oil pressure.

Any suggestions??

 

This is typical, even more so with 01-02 models.

 

What oil do you use? And yes it's normal. I changed oils and oil filter and don't have to put oil in between oil changes. But I do put in 6 quarts and i know the ls1 takes 5 and 1/2. By the why I switch to regular 5-30 valvolien the white bottle. And so far I haven't had to add oil. You can also get an oil anaylisis.

 

well i only put in 5 quarts. It shows full on the stick then. i use penzoil 10w-30 then 10w-49 every other change.

 

Is that full on the stick prior to cranking your engine and getting oil into the new filter?

 

It should be 5.5 quarts. Why you use 10w-49 every other oil chang?

 

This article will explain your problems, and show you a fix for it.

You need the LS1 to LS6 PCV conversion

read on.

http://www.ls1howto.com/index.php?article=18

 

I meant to say 10w-40.

and i fill the filter before i put it on

 

so that explains my problem. Thanks 380ss

 

No problem, glad I could be of help

 

Try using 5W-30, that's what GM recommends in the instruction manual.

 

Thats what I use.