GeoW97

If you could expand on some of the posts I found during a search on oil wisdom, I don't see an oil called "Mobil 1 SUV 5w-40" on Mobil's website; there's one called "Mobil 1 TurboDiesel 5w-40 for Diesel Engines", which is the only 5w-40 on the site. Are you referring to that one? And what would the advantage be if so? You mentioned a chemical that would be good for the seals on an older engine, and I'd like to hear a bit more on that, if you would; my A6 Quattro Avant is just over 100,000 miles and I'd love to drive it to 200k. If they're not making the one you recommend any more, would you go with 0w-40 or 10w-40 in my high-mileage car?

jguthrie

I think they discontinued it.