Generation III Internal Engine 1997-2006 LS1 | LS6
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No more burning oil!

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Old 05-18-2006, 07:58 PM
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Talking No more burning oil!

Hey guys, I bought my 99SS from a guy in CT about 5 months ago. I drove it for about a month and the low oil light poped on, so i go to check it and sure enough it was over a qt low. SO I said to myself, it must have just been old oil and i went ahead and changed it.

I put M1 5w30 in it and figured that was the end of it, the car only had 37k on the clock. Well sure enough, a month later it came back on! Now I was scared, I added a qt and watched it well, and it slowly burned away everytime.

Well, as a last resort I tried something I had never used before, on my next oil change I used castrol Syntech 10w40, and at the same time i added some c2 engine oil additive, it is supposed to stop oil burning. Well, it has been a thousand miles since then and I am still full to the top! God i am so releived, that 5w30 m1 seems to be thin. I would recomend this to anybody who is burning oil.
Old 05-18-2006, 08:17 PM
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I think this would apply to about 75% of the people on this forum...
Old 05-18-2006, 08:42 PM
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thats good to know,i am switching from M1 to the Amsoil 0w-40.Its been proven to cut wear in half over m1.You can tell when you do an oil change with m1,its very thin stuff.
Old 05-19-2006, 08:36 AM
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yea, I think the thicker oil has more to do with it than the additive, but im sure it didnt hurt either. All I know is it feels alot better knowing my car isnt chugging down oil anymore!
Old 05-19-2006, 08:50 AM
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isnt the oil consumption attributed to the LS1 style PCV and the way to fix it is with the LS6 style PCV
Old 05-19-2006, 08:55 AM
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In many cases simply switching from the thin M1 5w30 to a thicker oil (most notibly GC 0w30) will reduce oil consumption. The LS6 PCV mod, and the catch can are also helplful.
Old 05-19-2006, 09:22 AM
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I'm running GC 5w30 right now, along with an AMW Catch Can. No problems I've noticed so far. Its tough as **** to find good oil around here tho.
Old 05-19-2006, 09:23 AM
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Originally Posted by cyphur_traq
I'm running GC 5w30 right now, along with an AMW Catch Can. No problems I've noticed so far. Its tough as **** to find good oil around here tho.
Is there such a thing as German Castrol 5w30? I know theres belgian 5w40.
Old 05-19-2006, 09:32 AM
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eh, old habit from M1. my apologies. i do believe you are correct.
Old 05-19-2006, 09:33 AM
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No prob. I was just wondering if there was a newly released weight for the good stuff since a lot of people are scared off by the 0w rating.
Old 05-19-2006, 09:34 AM
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I run 0W40 M1 and have 0 problems. Having owned multiple LS motors, after a month or so, I always make sure I check the oil on the vette. Ammazingly enough, it burns no oil.
Now my Z28 01, was a different story but greddy catch can cured that. Now for my new 6.0, I'm putting on a LS6 PCV system + catch can (For TB only).
Old 05-20-2006, 09:32 AM
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Where are you guys getting the 0w-30/0w-40 Mobil 1?
Old 05-20-2006, 06:09 PM
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GC 0w-30 can only be found at Autozone.

Here is what you are looking for:

https://ls1tech.com/forums/generation-iii-internal-engine/475758-those-wanting-gc-oil.html
Old 05-20-2006, 06:27 PM
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thanks
Old 05-20-2006, 06:34 PM
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i believe that GM says that it is acceptable for Gen3 engines to burn up to 1 quart of oil ever 2,000 miles.
i was reading about it at work (i work at a GM dealership) when i was diagnosing an oil consumption problem on a 5.3L truck
Old 05-20-2006, 07:37 PM
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Woah..the PCV is the fix not thicker oil...all you did was plug something up...
Old 05-20-2006, 09:59 PM
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I did the LS6 PCV mod and now I burn about 1/2 quart in about 3000 miles. My catch can gets about 1/10 of that at the most.
Old 05-20-2006, 10:30 PM
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If your ls1 has HIGH oil consumption the issue you have is with the engine NOT the oil.
I have owned 3 ls1 powered cars and run them an everything from 0w-30 to 10w-60 just to compare.
Can't honestly say in a controlled blind test i could tell the difference between any of them for engine noise or oil consumption.
My current 2005 ls6 runs on Mobil 1 0w-40 with M1 filter and uses no oil between OCI's at 10,000klms.
I use the 0w-40 because the spec sheet tells me it is one of the top 3 fully synthetic oils on the market available to me at this time.
Oil consumption will always vary between engines but if its high its an engine issue.Heavier oil is just treating the symptom not the problem.
Ciao




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