Does anyone out there use Lucas 15W40 Long Drain Truck Oil? If you do, how is it? Does it work well and protect the engine? I just poured in 13 quarts in my Duramax 7800 Diesel. I saw the experiment w/ the Oil Stabilizer after I just poured in the Lucas Motor Oil, I hope that won't happen with the engine oil. I was told that there was Lucas Oil Stabilized mixed into the oil as well though.