Originally Posted by EagleAutosports
I've used Royal Purple and it's great. Any quality synthetic is light years better than mineral oil, in every way possible and it's worth the extra money.
Does your comment mean that you still use RP, or have you found just as good results with regular synthetics? I'm really interestd in RP for the MPG and *possible* HP boost, but extended engine life and part wear are my primary concerns. In other words, if I can get similar results with a brand name synthetic (for 1/4 of the price of RP), then I'll probably go that route - maybe treat my baby to 2-3 changes a year with the good stuff, then regular synthetic for all the other changes. At $7-8 a quart, that can get costly if I were to use RP all the time, but then again, I could extend the duration between changes, too, so maybe the cost (over time) wouldn't be all that bad.
1994 Mustang GT
5-speed 302 | Tremek T3550 tranny | 4.10 gears | King Cobra clutch | U/D pulleys | Long tubes | 65mm throttle body | fender-mount forced air intake | liquid-filled FPR | Autometer Lunar series gauges | weld-on subframe connectors | adjustable caster/camber plates | aluminum driveshaft | Fluidyne aluminum radiator & more...
...and crappy factory wheels