Originally Posted by tiger862
I am running the 5w20 version in my Grand Caravan which I don't notice anything abnormal except for fuel mileage. Engine sounds the same as when I ran Napa Synthetic Blend. The fuel mileage took a dump recently but I still have 2500 miles to go then back to Napa Performance which is a Synthetic Blend or Valvoline conventional which is a Synthetic Blend then see where fuel mileage is. I was at 22 mpg average and now am at 18 with a low of 13.
Setting aside the numbers (that's an entirely different discussion), I GUARANTEE you it's not due to the oil. You'd have to be running full sludge I the crankcase for it to be the lube.
@OP..the price per qt of that full syn is hard to beat without doing rebates. Too bad you weren't interested in it a week or two ago when it was on Rollback. Chevron just makes good lubes, buy it and don't lose any sleep over it. (the 6qt box is perfect for my sump size also, i dump the leftover half qt into an empty MMO bottle I have)