So I had three fill ups since I started this and notices a significant fuel economy increase. The timing is set to stock- for premium- and I have always used regular. With straight regular I have been getting 10.5 mpg mixed, my last fill up was just over 13mpg, with suggested amounts diesel added (as on octane booster bottle, 2 gallon was way too much)
So overall, I'm going to get a exact measuring device (old octane boost container)and carry some diesel with me in case I need to fill up alon the way. Tonight regular was 1.26/l and premium was 1.41/L. At a savings of 15cent per little, 80 liters I saved $12 in fuel, and with the increased mileage it's even more (still crap)
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