Sure, you can use it , but you will be ahead using any TCW-3 oil and Carbon Guard added and get the same result way less expensively. If you're up to your eyeballs in XD100, why not sell some of the excess?
Well Jim, you must be psychic. I bought 48 gals of XD-100 today. Three 16 gal barrels. I will sell some, and I wanted to use some for myself...V6 loopers.
I'm personally boatless at the moment and not sure what I'll end up with. Love to find a deck boat with an E-Tec on the back. We'll see. You should be able to get > $30/gal. Try CL ... I sold 12 gallons using CL and got ~ $32/ gal. Same guy bought it all.