What oil are you running??

[TBailey]

Just wanting to know what motor oil everyone is running?? Especially the guys with a little more horsepower. Thanks for the advice.

[strych9]

Mobil1. No reason to run anything else.

[SSMickey]

For warranty purposes, use a synthetic 5W30 that is API and DEXOS approved. It will say it on the bottle. A lot of the cars with internal mods are running oils with enhanced levels of ZDDP. As for brand, you'll get a hundred different answers to that. Royal Purple HPS, Redline, Amsoil, Joe Gibbs Driven and Brad Penn are all popular and quality oils for the modified crowd, but are usually not available at your local parts store.

[BullF-16]

Amsoil Dominator 15W50 race oil, and there are a bunch of reasons to run other than Mobil1. On a pure stock OE motor Mobil 1 is fine. Modded motors....not so much.

[strych9]

Originally Posted by BullF-16

Amsoil Dominator 15W50 race oil, and there are a bunch of reasons to run other than Mobil1. On a pure stock OE motor Mobil 1 is fine. Modded motors....not so much.

Explain. Mobil1 has 105,875 psi film strength rating, and 90,000 psi is considered outstanding protection. Lucas Racing oil and Pennzoil Ultra are higher, but Mobil1 is in the top three.

Zinc isn't a huge factor, given that these engines have super-tight tolerances. If these engines used flat-tappet cams, we would be having a different discussion. The key factor with roller cams is the film strength rating. Zinc is a wear inhibitor, but if GM warrants these engines for 100k miles, then I'm okay with the zinc content found in Mobil1 (801ppm). Plus, oil analysis has not shown any greater metal content (caused by wear) by using Mobil1 vs racing oil.

Many racing parts suppliers recommend Mobil1 for vehicles that are primarily used on the street, and only as an occasional racer. Different scenario if the car races more than it sees the street.

So, I stand by what I said. I'd like your opinion on why you feel that Mobil1 isn't good with internal mods.

BTW...this is a never-ending argument, so really I'm just looking for your opinion.

[TBailey]

Thanks guys I will keep looking into it... As far as the warranty goes that was gone a long time ago.... And I've only had the car a few months!

[mailclerk]

Originally Posted by TBailey

Just wanting to know what motor oil everyone is running?? Especially the guys with a little more horsepower. Thanks for the advice.

TBailey,

In my 08' Impala SS I run only Mobil 1 5w-30. Just got my Camaro so I can't change anything out until it's first OCI.

MailClerk

[SSMickey]

Bull never said that Mobile 1 was not good with internal mods and neither did I. I won't speak for him, but I feel there are better oils than Mobile 1 available, especially for internally modded engines.

Yes, film strength is very important, probably the most important factor when choosing an oil, but it's not the only factor. Bigger cams come with increased valve train pressures and I prefer to give my valve train every advantage I can by running an oil with enhanced levels of Zinc. Is Zinc as important in a roller cam engine as it is in a flat tappet cam engine. No it isn't, but it's still an important factor to consider.

If I can get an oil with the same or better film strength than Mobile 1 with higher levels of Zinc, why wouldn't I use it? Just my opinion.

As you know, GM warranty's these engines as long as the stock parts are used, not aftermarket cams and valve trains. So I feel there recommendation is null and void with internal mods.

[dixonk]

I use Amsoil full synthetic. Have been using Amsoil products for some time now. Good stuff.

[Scott@Bjorn3D]

Pennzoil Platinum and it is covered under the GM Dexos ratings for oil so will not screw up your warranty.

[BullF-16]

Originally Posted by strych9

Explain. Mobil1 has 105,875 psi film strength rating, and 90,000 psi is considered outstanding protection. Lucas Racing oil and Pennzoil Ultra are higher, but Mobil1 is in the top three.

Zinc isn't a huge factor, given that these engines have super-tight tolerances. If these engines used flat-tappet cams, we would be having a different discussion. The key factor with roller cams is the film strength rating. Zinc is a wear inhibitor, but if GM warrants these engines for 100k miles, then I'm okay with the zinc content found in Mobil1 (801ppm). Plus, oil analysis has not shown any greater metal content (caused by wear) by using Mobil1 vs racing oil.

Many racing parts suppliers recommend Mobil1 for vehicles that are primarily used on the street, and only as an occasional racer. Different scenario if the car races more than it sees the street.

So, I stand by what I said. I'd like your opinion on why you feel that Mobil1 isn't good with internal mods.

BTW...this is a never-ending argument, so really I'm just looking for your opinion.

Ths thread has an abundance of good info. Additionally, my builder, Erik Koenig of HKE racing engines) advised to steer clear of Mobil one and from the research i have done, i have concluded the same thing. In my wifes Camaros, I have switched from the mobil 1 to Pennzoil Ultra 5w30.

The guys at LG motorsports know a little about LS motors also.



http://www.camaro5.com/forums/showthread.php?t=257146

[TXM62SS]

Running Joe Gibbs LS oil since doing my cam swap.

[victoryred1ss]

I have two high horsepower Camaros. Mobil 1 syn from day 1 in both and no problems.

[james347]

Pennzoil Ultra 5w-30 seems to work really well for my motor.