|
My S10 sees various blends of ethanol almost every fill up, just depends where I'm at. Been doing this for over 5+ years and 70,000+ miles. Most of the time when I fill at a "blender" pump I'll pick up e-30 or e-50 (if they have it. For some reason some pumps go e-10, e-30, e-85). If the gas gauge needle is at 3/4 or above, I'll usually top it off with e-85.
Running straight e-85 causes my CEL to turn on if I ever go WOT. My S10 does not have a very elaborate CPU, and cannot compensate for e-85 in WOT. If I know I'm going on a long highway trip, I can almost always use an entire tank of e-85 without kicking on the CEL. Mixed driving is quite a bit tougher to run without engaging the dummy light.
I've gotten nearly all of my best tanks using e-30ish blends, and its usually $0.30-0.40 cheaper around here. No CEL and good performance as well. Only downside I have found is that some of the ethanol gets past the rings and into the oil. I do an oil analysis every few oil changes and Blackstone lab told me that the amount of it in my oil was nothing to be concerned about. Still, I change my oil a little more frequently if I'm running alot of e-85 (maybe every 7.5k instead of pushing it to 10k).
|