Yes, the manual confirms that MDS requires 5W20. I haven't had my first oil change yet but I will absolutely use 5W20 synthetic (probably Mobil1).GoingHemi said:I was looking on the "allpar" site and they have a paragraph that says in order for the MDS system to work properly, you have to use 5W20 oil. What are you all using, and does the manual confirm this?
Thanks for the info. So, does it have to be "OIL" or can you use "SYNTHETIC" ?Diver-dad said:Took my R/T to the Dodge dealer to get the oil changed and we talked about this very issue. The bottom line, from the dealer, was this:
"You MUST use the 5W20 oil in the 5.7 HEMI or any internal engine problems will NOT be covered under the warrenty. If your oil changes are not in the Dodge Maintenance system, then they will test the oil to see if its 5W20 BEFORE doing any warrenty work." Williamsburg Dodge.