I won't ever run Royal Purple in the crankcase or tranny. their oil analysis's are always the absolute worst. their diff oil may be okay but their name is tainted in my book forever. head over to bobistheoilguy.com and do some reading, they have a axle oil section i believe.
Mike L once said he wouldn't flush his toilet with Dex VI, that's how a bunch of people feel about RP. If you're gonna pay for an expensive synthetic go Amsoil, M1, Redline, w/e
Because I stock 30 gallons if it at my work and I get it very cheap. I don't drink the cool-aid regarding amsoil either, I know where the good shit is Heyyaa
And yes, I run a addative with my synthetic diff fluid.
I'm leaning towards Lucas 75/90 which is synthetic, is there any issues in running the synthetic stuff in a 2001? I thought I read somehwere about changing a vent tube or something if switching to synthetic.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Chevy and GMC Duramax Diesel Forum
3.8M posts
206.6K members
Since 2005
A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!