Originally Posted By: RISUPERCREWMAN
I was reading that trucks with MDS require 5W-20 or the MDS won't work correctly?
This is what the manu says, I would say the ram forum (mostly mds hemis) is about 50/50. 50% of the guys are running 5w30 all with no issues. We even have guys running PUP 0w40 without throwing any codes. I'm not saying I recommend that, but I run 5w30 in my 5.7 and have been for years no issue.
I was reading that trucks with MDS require 5W-20 or the MDS won't work correctly?
This is what the manu says, I would say the ram forum (mostly mds hemis) is about 50/50. 50% of the guys are running 5w30 all with no issues. We even have guys running PUP 0w40 without throwing any codes. I'm not saying I recommend that, but I run 5w30 in my 5.7 and have been for years no issue.