2012 F250 Super Duty Owners?
We're about to make a deal on a NEW 2012 F250 Super Duty. Regular cab & long bed. This one is stripped down... the only creature feature is A/C but for what it's worth has the "snowplow pkg". It'...
Forum Discussion
slarsen wrote:
BTW, regarding mileage: I have found that using a better grade of gas, like 89 octane instead of 87, shows noticeably better mileage. I had always heard that an engine designed for 87 will not run better with better octane, but these electronically controlled engines . . . maybe they tune themselves on the fly to better use the anti-knocking fuel??? Anyone know anything about this?
.
Per the guy who designed this engine..YES, it will tune for the higher octane and make a little more power. I read this when this guy was active on the FTE forum. It was not much more...If I recall @ 15 more HP.
