hemihustlin
Senior Member
- Joined
- Jul 23, 2013
- Posts
- 1,579
- Reaction score
- 994
- Location
- Lower Southwest Quebec
- Ram Year
- 2021
- Engine
- 5.7 HEMI
Got the part numbers for the lifters today at the RAM dealer
2014 RAM 6.4L
NON MDS lifter pn: 53021572AF
MDS lifter pn: 53021573BC
First year for RAM 6.4L is 2014
2014 RAM 5.7L
Same lifter pn's as 2014 RAM 6.4L
Confirmed
Again RAM director of engineering said that testing for 6.4L was performed using 5w30 conventional
Wow i think if we were on the tv show mythbusters we would declare that the myth of "5w20 is required for proper mds operation"
I would again like to thank raven for really taking the time to dive into the technical side of things
If he had not appeared we would still be discussing the difference between tri nuc moly vs. regular and the merits of polyol esters