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No real life proof from any so I'm going back to RP. I just use the api sn. I had turbo bearing issues before then I started the uoa's to see whats up. I believe the turbo issue was the recommended oil inlet fitting was restricted too much, we'll see soon. The car usually only sees 6000 miles a...

Yep they make all these. 21348= Pro Select 31348= NAPA Silver 41348= NAPA Platinum 1348 = NAPA Gold

Thank you ! It was mostly other forums and then some here also. People talk toooo expensive RP, but I buy it at about the same as M1, so its not that. I just want my turbo to live on. Thanks Again

Thank You for the replies ! Everyone kept telling me Royal Purple was no good for my turbo and to go with Mobil so I made the change and I can't see much difference between the two. Thanks again.

Ok, can the pros tell me what oil is better for my car here is another UOA this is Mobil 1 before uoa was rpyal purple. M1 was a 2000 mile hiway trip + short trips to work and a dozen 1/4 mile runs with some leaded 110 mixed with reg fuel, but 700 miles less than the RP change. Thanks for your...

Highway runs are not typical for this car. It usually sees 16 blocks to and from work 4 times a day. I change the oil like stated above at 3000-3500 miles always because the car is lucky to get 6000 miles per year. I just can't leave oil in a car for a whole year. I did refill with RP and will...

I change it 3000-3500 miles since I have heard a few things about aftermarket turbo'd engines and royal purple. So this is a normal change time frame for right now. I'd just like to know if this oil and my turbo'd engine get along well together.

Originally Posted By: jsnyder49090 I think he is saying your wear levels where typical for a car with 6,000 miles on the oil comparing averages.It seems a little odd with 32,000 miles it would still be breaking in.Where you running it hard? But he says the RPO was doing its job ?? but has wear...

Can you tell me exactly what he wrote here, the part in the (( )) not sure I get what he means. I also heard lately that this oil was not good for an oil cooled aftermarket turbo application, Thoughts ? Thanks for any help or replys on what you see. I'll be reading as much as I can here about...