Jump to content
  • Welcome To Mopar1973Man.Com

    We can see you are lurking about reading the forums and article databases. We happen to be one of the most friendliest Cummins support website on the planet. Come on and register and grab a inexpensive subscription plan. With that you can unlock even more for you. Technical support either by public forum, private support ticket, and even unlock phone support by Mopar1973Man. Mopar1973Man.Com will remain FREE to read forever!

Recommended Posts

I know most people run pennzoil, amsoil, or redline. I’ve ran royal purple for the past few years but I decided to give the valvoline brand a shot. The part numbers for mopar are on the bottle.

Been driving for 8k so far and been good with daily driving and towing, trans temp seems be run the same as royal purple. Shifts smooth. Don’t know how it compares in the cold yet, but I don’t think it’ll be a problem. 
 

B39F0AB6-A55E-4D8F-881A-55DFB8DE41FE.jpeg

Link to post
Share on other sites
  • Administrator

Mobil 50 SAE I'm running is a synthetic and it is a GL-4 gear lube which will protect all syncro's. It thick like 90 weight gear lube but rated for all Eaton Fuller 10 speeds in commercial applications. I prefer a thicker gear lube for transmission that is towing that a thin one that might give good shift performance. 

Link to post
Share on other sites
×
×
  • Create New...