Quote:
Originally Posted by JSPERFORMANCE
When we were trying new oils (after Mobil one changed their formula) I researched Royal Purple and used it myself. I found that it broke down alot faster than the Amsoil and even some conventionals. It always came out very thin where the Amsoil seems to keep its viscosity alot better. In fact we recently changed the IROC over to the Amsoil Dominator race oil and the car picked up .2 and 2 mph. I was sceptical at first but there were no other changes made and the DA and temp were the same as some passes last year where the car was the .2 slower.. I dont know for sure if the oil did it but I am not gonna run anything else..
|
I agree. Royal Purple is more hype and PR than substance.
I wouldn't pay the $$$ for Royal Purple. My own oil analysis came back with less than stellar results after only 3 20 minute track sessions and 3 or 4 autox events. The oil had already sheared out and had broken down. This similar what the previous owner of the car (2MCHPWR) experienced when owned the car. At the time he made the switch to Redline. So same car, two different tests, two different labs and the the same below average results from a supposedly top shelf synthetic oil.
I couldn't find Redline easily, so I decided to give Royal Purple another try. Not what I would expect from a full synthetic oil that makes the claims that RP does. Might be fine for a daily driver, but not for any kind of hard use (not abuse), just hard driving.
The car now gets Amsoil, we'll see how that holds up after it goes out for analysis.