Anyone else add Marvel Mystery Oil to their gasoline fill-ups? .....it's reddish in color...smells sort of peppermint....owned by Turtle Wax...believe it is a detergent and light weight lubricant...that helps disolve engine sludge that usually builds up.
Topping off a 12 gallon fill-up with two ounces of Mystery Oil.....is like a reward for my almost ten year old Ford for making it this far. An ounce of prevention...
Somewhere, I heard that Mystery Oil in the gasoline is a no-go if you use synthetic oil in the crankcase as the two do not mix well.
So, where's the most aesthetically attractive, green garden, gas station around......it's the Holderness Citgo country store.
1.889/gal...most everyone there looks just like a 1940's Katherine Hepburn, too.