Royal Purple Oils.... Your Thoughts

[Beef]

As the title says, does anyone use this brand of oil, i have heard awesome things about it and im doing a change with the royal purple 10w40 tomorrow....

anyone else using it?

any thoughts on this brand?

Beef

Edited August 9, 2006 by Beef

[xxx_25L]

i recently put royal purple in my g earbox and diff, its really good has made changing gears smother and the diff always lock i recon its a good alturetive to paying for redline

[maccattack]

Beef,

I have been using Royal Purple 10W40 for a while now - ever since my last blow up. After spinning bearings my mechanic did a little research to ensure we were using the best oil available. From his feedback, a lot of the high horsepower guys are using Royal Purple because of its friction coefficient and is an ash free synthetic. Fairly expensive (especially when you have an extended sump), but so far so good.

[Busky2k]

Theres no such thing as 'ash free'. You can see this from the UOAs. Ash freemeans there are no metallic type additives in the formulation which is clearly not true.

IMO Royal Purple's street oils are OK (no evidence to suggest they are better than Mobil1 in real world testing), but their racing oils such as RP21 are quite good.

[Trex101]

Beef,

I have been using Royal Purple 10W40 for a while now - ever since my last blow up. After spinning bearings my mechanic did a little research to ensure we were using the best oil available. From his feedback, a lot of the high horsepower guys are using Royal Purple because of its friction coefficient and is an ash free synthetic. Fairly expensive (especially when you have an extended sump), but so far so good.

The flash point for RP 10w40 are only 204'c (HTHS 4.02), the RP 15w40 flash point do look better with 224'c but (HTHS 3.6) only. IMO both not really ideal for hot running turbo engine.

The RP 10w30 do look better with flash point at 235'c and HTHS of 3.3, i would say go for the 10w30 for faster turbo spool and better thermal stability.