Something you may want to consider when shopping for fuels is high volume turnover. You don't want to buy stale fuel, or dirty fuel for that matter. I too kind BP/Amoco the best, along with Texaco. Mobile cetanes (I've seen) are at 40, while a Gulf station near me sells 45! I like the Gulf too. If your are really concerned about the cetane, buy a cetane booster to get it high enough.