2008 Dodge Ram 3500, 13k miles, MCSD 15w40

Joined
Jun 22, 2008
Messages
1,293
Location
Colorado
Seeing MC perform exceptionally better than RT6.... I'm just done with 5w40 in my truck, never to use it again, after my experience with it foaming, looking like melted milk shake. This confirms to me that RT6 5w40 ain't what it use to be. My next fill is RT5 10w30 Semi..... That oil is super robust and not as many VII's as 5w40.
 
Last edited:
Joined
Aug 8, 2004
Messages
332
Location
NJ
I run a 2019 3500 as one of my hotshot trucks and do 15k to 20k changes on 5w40. Push it a bit she will not mind.
 
Top