who runs royal purple motor oil?

Dieselcrawler

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who here runs it and how long do you wait to do intervals. i picked some up to try in the dually, going to sample the kendall i am draining out and when the RP gets to 3000 miles i am going to pull a sample on that. i normally run my kendall to 5000 miles. first time with RP synthetic.
 

Diesel_brad

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We do at work. It gets put in the DT 466s and cummins 8.1s bucket truck and digger trucks. They typically go about 1000 hours on each oil change:eek:
 

seawalkersee

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Can't speak for the oil, but I run it in my trannies and it improved the shifting in my M5R2 and caused the 4r70w to last longer than it should....WAAAAAAAAAAAAAAYYY longer...

Try it and let us know.

SWS
 

Diesel JD

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How many miles are on the dually? If it were me, I'd switch to synthetic by using 2 auto-RX treatments and rinses. RLDSL advised me to do this before switching and my switch went well, no abnormal leaks, ran just like ordinary oil etc.
 

Dieselcrawler

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it has 107000. and doesnt drip a drop of oil as it is right now. oil has been changed so a little late now.
 

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