I have 150K miles on my 09 Grand Cherokee with the 5.7 and no litter issues at all...... nice and quiet......... I bought it new and got a predator tuner for it and disabled the MDS very early in its life...... Main reason was I put the SRT8 headers and exhaust mods on and it sounded like a sea lion in mating season when the MDS activated the V-four mode...... I don’t know if these problems are related but food for thought....... Do the manual trans cars Without MDS have lifters fail as well?....... TBF
My Ram is an 07 auto trans with the MDS disabled with a Diablo tuner. I started getting check engine light at 200,000 miles. That was 3 years ago and just started using the additive. Might even go 10W30 on the next oil change. My wife has 2004 2500 stick shift 5.7 Ram and it runs fine, no lifter clatter at all.
