I am only saying what Shell says about this, i have not done any independant testing. So, that said, according to them, it is the same formulation used. Its rated to be safe for Diesels up to a rating of CJ-4 and for gas up to a required API of SM. As long as your vehicle calls for these ratings or lower, your cats, rockers, walls, etc will be fine (according to them).
FYI: the ratings go like this; C is for diesel and S is for gas. The next letter is for the refined/additives rating, starting at A as the lowest/worst and getting better up alphabet.
answered 2 months, 3 weeks ago