Will that automatically "blend" to a 90-octane gas tank?
I know this sounds stupid, but my car says it "requires" premium gas, but at 91-octane. I generally get premium 93-octane gas at Costco, which is the cheapest in my area, usually by 25-40 cents a gallon (has been more). I wonder if I got something more than half the tank 93-octane, then filled up the rest with 87-octane if it would satisfy the "requirement?"
I have read numerous people with the same car, and have seen all kind of opinions--some say it is fine to run 87-octane, no matter what the manual says. Others say they don't get as good of gas mileage. Others say it hurts the engine in the long run. Others say they're full of you-know-what. Anyway, this isn't a debate on whether I *can* or not--I am going to abide by what it says--my question is solely whether I am in compliance if I "blend" it myself this way?
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