RoyalPurple oil?

[Jimbo2000]

ok anyone have any experience with the royal purple range

got an offer to change gearbox, engine and diff oil with this stuff for $340, heard its pretty much the best, wondering about the gearbox, got redline in at the moment and cant fault it but maybe this is even better

[JimX]

One thing I've learned about car stuff is if it does the job, there's no sense in upgrading.

Royal Purple may be the best, but if your box and diff are fine with Redline, what are you actually paying for?

[Jimbo2000]

redline in the gearbox, dont know if the diffs ever been changed!

[JimX]

Hmm well you should change the diff oil then. Since there's not much oil in the diff you may as well put Royal Purple in if you can afford it.

[siksII]

I have a hot4's engine oil test, where they compare dyno figures with different oils, same car, same day, same temperatures.

The two best oils were...mobil1 which gave as far as i remember about 6% over the control oil,

.............but then...they tried royal purple, and it was unbelievable!! It was some crazy figure like 10-11% power gain over the control oil!!

So if you can afford it, try it, i would.

[Jimbo2000]

the engine oil is only 70-75 dollars which makes it only about 10 dollars more than Mobil1 so yeah not too much more

[NFAA32]

have you guys seen the new mobil 1 gold stuff, saw it at local autobarn, $100 a bottle of 5 litres...

[Guest RedLineGTR]

nah havent seen it...i'll keep a eye out..

[Busky2k]

Yeah, its the Mobil Super Syn formula. About time it came out. Its been in the US for over 1 1/2 years.... And RP is a bit overhyped IMO. It doesnt show anything special in UOAs (Used Oil Analysis) in various cars compared to other Synths out there.. But if it floats your boat.. hehe

[Ronin 09]

I don't know if you guys realise, but this "extra power" from changing oil has to come from somewhere. While viscosity will play a part in the velocity of the reciprocating parts and limit/affect power production, i would think that the primary difference is that the oils that produce more power are less wear tollerant; ie while they are still protecting your engine, they are more prone to wear. Consider that a thicker oil will provided better protection, but will rob power; by the same token a thinner oil will promote the engine to spin more easily but all thing equal it will not protect as well.

[JimX]

Higher viscosity does NOT equal better lubrication unless you're running extreme type engines (ie, 1000hp+ drag cars). For most of our cars, if the rings and valves are still good, a 30 or 40 weight oil is good enough. Any thicker and you lose power for no real gain.

The benefits of thicker oil in normal cars appear when your rings start to get a little worn, and the thicker oil will help seal the gaps a little better so you don't burn as much.

[Ronin 09]

yep you're right, i'm just saying that there is no such thing as free power. To make more power you have to expect more wear, period.