Royal purple XPR 10w40 question

Bottom line:

The brand of oil chose is like which color is the most popular. All modern synthetic oils are good.

[stephen wilson]

I'd agree with that. But why use "good" if you can get "better" or "best"

Better or Best is ALWAYS subjective.

[Adam]

I haven't used RP in my Porsche, but I have both the motor oil and gear oil in my Mazda right now. Kinda tough really to know how good an oil is unless you tear down the engine after 100K miles or have a lab and everybody claims their oil is 10X better than the next guys. All I can say is the gear box shifts smoother now and I recommend the gear oil for sure.

[941MXVET]

When I first purchased my Boxster, the consencious was that Royal Purple was pretty good stuff, in fact my first oil change was to the Royal Purple 5w-40.

I kept on researching oils and once I learned about polyoester based oils I figured these are what I'm going to use. If your interested in POE (group 5) oils look into Red Line, or Motul 300v oils. Since we live relativly close to a Red Line source, Summit Racing, we went with Red Line.

In the end, it's your car, run the oil your confident in.

[Cloudsurfer]

Big fan of the Motul, but man, not cheap!

[manolo]

+1 on Motul. I use it on motorcycles and my 986S. I've used just about everything they offer, from hand cleaner to tech grease to MoCool coolant. None of their products have ever let me down, but its definitely not the cheapest thing out there.