Originally Posted by PaulMys
Agree with above posts. However, in my neck of the woods the difference between 87 & 89 is about 10 cents. I usually average about 18 gallons per fill-up with my 26 gallon tank (Never let it get below a 1/4 tank if at all possible). To me, the extra $1.80 is worth it. (Even though it just may be for my peace of mind.)
Just my two cents. (Or 180 of them) LOL!
I agree, about the same difference where I hail from and I run the 89 flavor. But I also tow, which gives me extra incentive.