Royal Purple

[Apex Motorsports]

I am a fan of Royal Purple. Been using it for about a decade now in various vehicles.

[1954 Belair-man]

Originally Posted by OldJedi

I plan to stay with Mobile1 and change the oil at 1500 miles.

[gcope63]

I will probably go Mobil 1 in my car over Royal Purple, mainly because of availability and price. Have ran both and both work great! Have never tried Amsoil so have no input on that one.. If you want to know anything about oil this is the website to check out... http://www.bobistheoilguy.com/
That includes questions about warranty issues, it is well covered on this site..

Gary

[Blownhotrodder]

Originally Posted by alex33x

I've used Royal Purple in all my cars, they have break in oil for new engines even. Be aware though, I always take my card to do oil changes to my nearest Chevy dealer, where I also purchase my vehicules.

I was warned, using royal purple, basically voids your warranty. Yeah you heard it, I was told by my service advisor. Unless you put in what Chevy recommends, thich I think it's valvoline, basically you are voiding your warranty.

As long as the oil meets the specs in the manual you can use whatever oil you want without voiding the warranty. They cant make you use a certain brand, its against the law. Your service manager is lieing to you or is misinformed.

[Happy_Dan]

I guess I should be more clear. I use Mobil One for my oil changes.
I use Royal Purple for rear diff and tranny and usually change that every 30K miles. Looks like I will be changing rear diff more often on this car.

[b_williams_82]

I noticed a huge difference in the way my 02 SS felt after adding Royal Purple to the rear diff!! It was awesome!! Just don't know if I wanted to do that with this ZL1! Maybe I will!!

[Andy@Livernois]

Originally Posted by alex33x

I've used Royal Purple in all my cars, they have break in oil for new engines even. Be aware though, I always take my card to do oil changes to my nearest Chevy dealer, where I also purchase my vehicules.

I was warned, using royal purple, basically voids your warranty. Yeah you heard it, I was told by my service advisor. Unless you put in what Chevy recommends, thich I think it's valvoline, basically you are voiding your warranty.

Originally Posted by hairtrigger

I have used Royal Purple and Amsoil and both are also excellent. They are not, along with Joe Gibbs, approved by GM solely for warranty reasons regarding CAT life.

Actually, Royal Purple has met Dexos1 specifications for about 6 months now.

This is the only rating that matters for 2011+ GM cars. So any dealer telling you that you will void your warranty because of it is making it up.

[2SSJIM]

Royal Purple is the only way to go as far as I'm concerned.

[the rich dude]

Royal Purple. Have ran it in my buddies 2000+ HP race car with awesome results!!!

[hognutz]

there was a guy on the corvette forum who analyzed the two independantly. Mobil 1 had more life than royal purple in his test. they both had good results.

I don't trust the backyard mechanic's on motor oil. Most dont test so they are just guessing. I don't switch unless there is a proven reason too.

I don't think you could go wrong with either but why have that argument if you waranty is still intact. just saying.

[thespymaster]

Originally Posted by boxmonkeyracing

check to see which one meets manufacture specs. I have a feeling royal purple doesn't.

Read the owners manual on all 2012's your required to use the
DEX oil or risked voiding your power train warranty

[HDRDTD]

FWIW...

http://www.gmdexos.com/licensedbrands.html

No idea just how up to date the list is.