I currently have a 3rd gen 08 dodge ram 5.7L that has MDS with 104,000 miles. I'm not exactly sure how the v8 to v6 cylinder change is actually healthy for your motor. My question is- If your inactive pistons aren't getting oil on the highway(in v6 mode) for some time and get dry, then when they go active again (v8) once it switches back, aren't you ruining your pistons? Isn't that horrible for your motor and after awhile the wear will cause you to need a rebuild? I understand people will say to make sure you use synthetic and the right oil at all times, but right now my fathers 07 5.3 chevy tahoe(60,000 miles) has the same thing and he is currently facing a motor rebuild for the same reason. And the dealer knows it's a problem but you haven't heard anything about it. But there is now talk of a big lawsuit. AND I know ford and dodge have this same economy mode that all act similar to each other. Is the MDS going to be a long term issue on my Ram, and should I get a tuner in order to hopefully avoid a motor rebuild myself as well? I've done some research on a couple different vehicles that have the v8 to v6 switch and it seems that once you start burning oil it's over. Could this just be a GM and Ford issue or should I really be looking to make sure I can avoid the same problem?