2nd Generation Chrysler Minivans: 1991-1995
My van used to average about 22-23 mpg on the highway in the past using standard Castrol 10w40. Last fall I started running Castrol 10w40 Syntec Blend, and on a recent trip from NYC to Syracuse I ended up getting 25 mpg. Now most recently (400 miles ago) I'm running with Castrol 10w40 Syntec...