Quote:
Originally Posted by Hersbird
I noticed on fueleconomy.gov the 1999 3.3 Grand Caravan is rated 16/22/18 and the 2007 3.3 Grand Caravan is rated 17/24/20. I wonder if that simple change was a big part of the gain.
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I think the piston skirts are coated on 2001+ engines...
Piston Coating : Advantages