I don't use the Marvel for lubricity, but to clean up the injection system. Don't know what's in it, don't care, I can tell a difference in performance after running a qt through it. The Power Services Supplement helps boost the cetane. Turbine fuel does not have the BTU content of Diesel and using the max reccommendation really helps acceleration. That's important on a 4800 pound car developing 150 hp. When diesel was 5 bucks/gal on I10 a couple years ago, the car really made life easier

Wayne