This stuff is $29 a gallon it must be good ......... Has anyone used it??????

 

I am not saying it is not good stuff. Im sure it is.

But just because you pay more for something doesn't make it necessarily better, imo.

 

I used it in my 97 and always had really good test results. Craig

 

Excellent oil. Use it in our 01 mustang, used it in our 03 Powerstroke, engine ran smoother, cold starts very good. A little bit better fuel miledge in Powerstroke. PSD was very oil sensitive, RP made a real differance.
Wayne

 

Im not using it but it seems lke everyone that has got good results from it............ Whats the drain interval on this stuff?????

 

With Oil Guard bypass filter and UOA 15k. Could have went more if not for injector leak.

 

Boris nice truck man I like your wheels.............

 

Thank you sir, I need some fender flares or the protective film as I am getting some rock chips with the wide tires.

Also, this is an excellent site. I am new to the Cummins and I have learned alot from everyone, Thanks all.

 

its made about 45 mins from me and i went to their plant once. its pretty nice but when i hit 20k miles im switching to amsoil

brett

 

Yeah... It is good stuff... But for your money I would use Schaeffer... Just as good and cost much less.
Oilguy

 

Royal Purple has had a bad name in the oil circles because of its' lack of shear stability and poor TBN retention. I can point to several UOA's of Royal Purple on Bob is the Oil Guy in which Royal Purple sheared badly and depleted its' additive package with not a lot of miles.

There are MUCH better oils out there for less IMO. The UOA's speak for themselves on an oils performance.

 

Any oil after a couple thousand miles will make a 6.0 PSD run smooth because the 6.0 PSD shears the holy hades out of oil (oil sheared down a grade means less friction and easier pumpability because the molecules are now smaller). There is only one oil out there that can withstand the HEUI setup of the 6.0 PSD and that's Red Line. The polyol ester base stock and overall formulation of Red Line is as tough as a tank. Schaeffer's is the only other oil that I've seen perform well (shear stability) in a 6.0 PSD.....it isn't as shear stable as Red Line, but it does stay a borderline 40/30 weight which says a lot for it IMO while withstanding the oil torturing 6.0 PSD.

 

Which Schaeffer oil... 7000 or 9000? I'm using 7000. My rep didn't think the 9000 was very much better. Craig

 

The 7000 uses a Group II & Group IV base stock, while the 9000 uses a Group III & Group IV base stock. Both oils are excellent, but the 9000 has better cold flow properties.

 

I've been using Royal Purple for about 13,000 miles. The truck seems to run slightly quieter and gets a little better mileage.

I ordered it in a 5 gallon jug from these guys.
http://www.longrider.com/catalog.htm