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My ls1 goes thru about 1 quart of oil every 2 thousand miles with 5w30 mobil 1 full synth. It has 89000 miles now, should I go back to conventional or high milege. I have no leaks its very dry underneath so it has to be burning a little.
Any advice would be helpful.
I suppose you could try an oil catch can. That level of consumption while using Mobil1 5W-30 may not be all that bad though. Mobil1 is available from a number of places at pretty low prices as compared with some others and adding a quart every 2k miles gives the oil a fresh shot of additives.
Lubrication engineers. Look it up. I work for a roofing company with a fleet of light and heavy duty trucks, dump trucks and loader trucks. We have switched to their 10w30 and cut oil consumption. They make racing oils also.
__________________ Next project 1999 SS Camaro. Lose weight and maximize all good.
Try using either Royal Purple 5W30 or 10W30. I think you'll see a significant reduction in oil usage. I just put Brad Penn 10W30 synthetic blend in my SS, cheaper than any full synthetic and better than all of them. It's a real performance oil, if you have cats use their full synthetic 5W30.
Here in AZ, it's classified as "extreme" conditions - dust and heat you know. Given that, I put full synthetic in with a rating of 10W-40. I switch between Mobil 1 or Castrol Edge/Syntec. Never had any problems.
Something to keep in mind (and trust me, many people debate it) is the length at which you change your oil. Oil is in itself a "filter" catching microscopic debris over time. In AZ, oil get dirty quickly compared to say, a cooler/humid state. I don't change every 6K like the MFRs suggest. I do mine about every 2.5-3.5K or when it feels like I've gone a few months. The result? The oil isn't black like tar, instead, it's like a medium-roast coffee color, which means it's clean on the insides. Just my experience/opinion - it's debatable.
I don't know what best is. If I want to argue over small differences I would say that Pennzoil Platinum 5W30 and German Castrol 0W30 are better than Mobil 1 5W30 synthetic. You might find that you like Mobil 1 0W40 a little bit better than their 5W30.
Pick something with a HTHS of at least 3.0 and less than 3.6 and you should be ok viscosity wise. Most of the synthetic oils on the shelf have at least decent additive packs.
The catch can will help out at least it did on mine.I guess it slows the suction down a little bit.I would say any 5-30 synthetic would be fine as long as you change it like it is supposed to be changed.I see people run advanced auto synthetic oil with a bunch of miles on their cars.
98WS6,Stock 806 heads,Ls6 intake,slp long tube headers,.222/.585 comp cam,Fti 3600 xtreme performance Trans,3.73 gears,80mm bbk throttle body.
60-1.62. 1/8th 7.45 91mph 1/4 11.73 at 115mph on 275-50-15 nitto 555r tires.
I use Mobil 1 in my newer cars, 10w30 in my LS1's and 0w40 in my MB and AMG. In the older flat tappet cam cars I run conventional with zddp addative.
+1 on a catch can though, too much oil sucked through the throttle body for my tastes.
__________________ 2002 Trans Am WS6 - Sunset Orange Metallic
GMPP LS3 crate - firstname.lastname@example.org w/1.448 short 2011 Super Chevy Maple Grove True Street 12.00 Winner, 2011 Tri Power Pontiac Nationals Chief Of The Pontiacs, 2011 LSX Shootout True Street Challenge 12.00 Winner, Raceway Park Championships in Real Street (2011) and GM EFI Bracket (2010 & 2011). 2013 C63 AMG Coupe - Diamond White w/Black&Red Leather, P31, LSD - 11.9@118
OE Tuning - MBH headers - 11.32@125 2013 GLK350 & 1989 GTA 3.8SFI Turbo 10.50 @ 129