That's what I'm thinking. I'm running at 7 degrees BTDC and was thinking (before the test) about kicking it up to 9 degrees...not now. After this tank I'll switch to premium gas, at least while the prices are low, thanks.


'97 Jeep Cherokee XJ, Country, Black/Gray Leather, 4.0L, 4WD Command-Track, AW-4 Auto, 3.55:1 Gears, PowerTrax No-Slip Locker, Hi Country Tow Brackets, Spectre Air Filter, 235X75R15 Goodyear Wranglers, 126K miles