Did my last oil change with QSUD and I really like it. I picked it up because it was $7.00 cheaper then my usual M1 for the 5qt jug at Wally World. Im really impressed my motor runs smoother and quieter then with M1 and it seems to have gotten rid of the annoying HEMI tick. Think i will be using it from now on. Is it the same as PP since they both Shell products???