I'm just curious. Is there anyone on here who is running Mobil 1 and is planning on going 10-15k intervals with analysis?
I think I will keep my sister's car running Mobil 1 (I just put in SL TriSynthetic, and will use SuperSyn in March) and will try it out on 10k+ intervals. I was going to try her car on the free batch of Royal Purple, but I'll save that for my wife's car only now. I'm really interested in seeing more results on M1 at higher intervals. I do believe it can handle it under the right conditions (up to 15k anyways)