- Joined
- Mar 16, 2012
- Posts
- 2,224
- Reaction score
- 3,678
- Location
- Midwest
- Ram Year
- 2012, 2021
- Engine
- 5.7, 6.4
And lets face it, if there was even the slightest possiblity that the 3.92 was more efficient, Ram would not offer the 3.21 at all. Why would they? These guys are now prescribing ditch water instead of 30 weight oil, carefully selected minivan tires, active grills, and increased oil temps, all to save a fraction of an MPG.
Yet MDS doesn't save a fraction of an MPG? They went through all those other lengths but then spent time and money engineering a system that doesn't?
I suspect you see more people posting mpgs with 3.21 for the same reason you'd see more people posting 0-60 with 3.92s. Self-selection of people who care about those things and purchase decisions.