[Smokinbuffalo]

So I was reading in the manual that our cars are designed for 93 octane, but all I can find around here is 92 octane. So I started playing around with adding some 101 octane to a tank to try and raise the octane to 93. I wasn't sure I would see a difference, but it has been noticeable. It feels much smoother at low RPMs and 3rd gear is much more usable for taking turns. I think the ECU must be pulling timing at low RPMs with 92 octane (especially with the e10 stuff).

I did the math, and it take 1.4 gallons of 101 octane to a tank of 92 octane in ours cars to make 93 octane. To make 94 octane it takes 2.8 gallons of 101 pert tank of 92. The problem is 101 octane is hard to find, and it's expensive. It runs about $11 a gallon. I have heard that some auto parts stores can order 5 gallon cans of high octane gas.

I have run a few tanks of ethanol free 92 spiked with ethanol free 101 octane now, and really notice a difference in the way the car feels. Is it worth the extra and hassle and expense? Probably not, but I recommend trying it out some time.