Zmg00camaross

iTrader: (11)

What are cats

oneoverwrx

iTrader: (1)

Any idea how rotella 15w40 does. I have ran it in basically everything. My Wrx to 8800rpm at 600awhp, both my d series and b series setups to 9500+ and around 500whp, my ls1
Last year and my 4.8 this year. If I need to switch I will but I always heard it has the most additives. I also change it every 2-3 track outings(about every 2 weeks). Might be a little excessive but it's cheap enough to do.

02sleeperz28

iTrader: (26)

Good read. Thanks

Ferocity02

iTrader: (60)

From what I've researched, API oils have reduced zinc content because it reduces the effectiveness of the cats.

Here's a good read I found: http://www.enginebuildermag.com/Arti...continues.aspx

bp m1009

iTrader: (2)

how often do you have to change your oil if your running these more expensive zddp oils? i would but they're expensive and have to be changed frequently

The Alchemist

iTrader: (19)

I understand that, but if you have an engine that is performing properly, 1: cats aren't really needed. 2: you will have very little blow-by, which is where you'd see contamination from the oil hitting the cats.

So build your engine right, use a good oil with high content of ZDDP, and change your cats after 50,000 miles if you are concerned.

mike13

iTrader: (27)

What is considered a "low" and "high" level of ZDDP? I use Royal Purple HPS and it's only because of reputation, couldn't tell you the zinc or ZDDP.

97yoda

wondering if royal purple is also a good oild to be running in my vehicles. been using it since 05 with no issues. have heard in boosted cars it ends up having a problem of breaking down and causing damage.

The Alchemist

iTrader: (19)

I wouldn't use Royal Purple to lubricate a mousetrap much less put it in my car.

SPRAYED 01

iTrader: (22)

Why is it d so bad?

The Alchemist

iTrader: (19)

Royal Purple's only purpose is to try and 'make more power' at the expense of protection for your engine. It breaks down so quickly.

Do a google search on royal purple damage or royal purple sheer properties.

Louis

iTrader: (7)

IMO, I like zinc levels to be in the 1500+ range. Redline, CAM2, Joe gibbs are all in the 2000+ range.

Thanks to the Alchemist for the knowledge in this thread!

mike13

iTrader: (27)

Thanks.

Which Redline oil? Isn't there a few series of oils?

87silverbullet

iTrader: (11)

That's sig worthy right there.

I have never liked Royal purple for anything.

The Alchemist

iTrader: (19)

I know a little bit about oil and chemistry, and try to help where I can. I'd rather give up 5-10hp by running a better, safer oil. Leave the 'horsepower oil' to the guys on Saturday morning TV.

Check for ones that specify that they are high in either zinc or ZDDP. Can't go wrong with any of the CAM2 products.

It's the truth. I won a free case once from a raffle on the power tour and turned it down.

Ls-x

iTrader: (3)

Thank you louis ,
I am allready using vr1 20w50.
What do you recommend for the t56 ??

chasgiv3

iTrader: (1)

I just throw in Zmax twice a season. No issues.

z-maro

iTrader: (18)

I got a case of the CAM2 BlueBlood 10w-30 synthetic blend oil, and it says on it "not for use on commercial vehicles/street cars" or something like that. I was wondering why they would say that? What would make it good for "racing" engines, but not recommended for non-racing engines?
I am assuming its fine to put in my stock LS1, but just want to make sure.

The Alchemist

iTrader: (19)

For the same reason when you buy a camshaft it says 'for offroad use only'.

Like I said above, yes, the zinc and phosphorous can reduce the effectiveness of the catalytic converters. But again, if your motor is built right, you get minimal blowby and it's not a concern. They have to put that label on due to legal verbage associated with the whole cat battle between the epa, automanufacturers, warranties for cats etc.

93camaro_zzz

iTrader: (13)

So what does everyone think about Mobil 1 Synthetic? I figure if GM puts it on alot of the LS1 oil caps, etc, they have to support it for use in "our engines". Unless Mobil 1 just pays them alot, which could be probable.

But then that would not help them at all with warranty costs.