Royal Purple

[KMac]

I've been away from the forums lately due to alot of work for college, but I've been trying to keep on whats up.

I dunno if any of you guys have tried/use Royal purple, but it has performed miracles in my cutlass. My gas mileage gets better every time I drive it, there is a noticeably high increase in acceleration, horsepower, and torque, the engine runs way cooler, and its a tad less rpm at highway speeds. Its worth its $7 a quart imo. Any of you guys used it?

 

[Coveted]

I'll never use it after seeing whut it does to engines.
Just my .02 it makes a mess out of the valve train with sludge.
3 times quicker than conventional oil.
I run 20 50 in everything with a piston.
Hit up google about it you'll find some horror stories assosiated royal purple.

But I mean if your enjoying it, Dont change by any means.

 

[srercrcr]

Buy Super Tech Synthetic at Wallymart....best buy. Won't be paying for those big glossy ads in the car mags. Who did you think was paying for them???

 

[dan2286]

I think Mobil One synthetic does just as good a job, and cheaper when bought in 5 qt jugs at Walmart. I have used both and I think they are just about equal.

 

[v8power]

Shell rotell(i think its spelled like that) is my favorite oil hands down, it is a diesel oil but.. that is better to run because of the detergents in it.

 

[85 Cutlass Brougham]

I use Mobil 1 in my cars, but have heard good things about Shell's Rotella T as well. Rotella T was designed as a diesel engine oil for big rigs, and as such has a better detergent package. I think it also may have more ZDDP in it to work well with flat tappet camshafts, but it may be another brand. As for Royal Purple, it's a bit pricey for my taste and needs. I do an oil change every month and it just doesn't seem worth it-especially when I have seen 287,800 miles on the engine using Mobil 1.