I am debating as to which one would do better in a 7,500-10,000 mile OCI on an '98 Audi 30v V6, as well as a 94 honda civic, or just in general.
Kragen has a coupon for $3.99/qt for Mobil 1, so this would be an excellent opportunity to pick up the SUV oil for a great price.
However, Autozone also has a special right now, 22.99 for 5 quarts of (GC) Syntec and a stp filter.
Also, my local walmart has 5w30, 10w30, and 15w50 for $3.38/qt (too bad they don't have suv or 0w40 for this price). I fell that the 15w50 would be too thick for the audi, and definately too thick for the civic, but would offer great protection and quietness.
As I see it, both GC and Mobil SUV oil are good oils; I would consider the SUV to be slightly better and shear stable than the 0w40 european formula. Both the GC and the SUV have around the same cSt, with the SUV being a little higher, so that should help with consumption on the audi.
Right now I'm running GC in the audi and it runs great, very quiet, and smooth. Also running the GC in the 94 civic and it runs great as well (my brother is rather hard on the civic).
Any comments? I really want to get a good all around oil, and I know that mobil 10w30 is a great one, especially at $3.38/qt. But when GC and SUV aren't on sale, they are $4.99/qt.
Thanks in advance