Back in the late 80's my dad had to have his carb rebuilt on his 85 hilux and the mechanic told him he had been running junk gas in it. All he had run in it for quite a while was Super America so he quit running it. Now, years later I have never used Super America/Speedway gas and was wondering if it is any good? It is always about 3c cheaper per gallon, and I always have to drive out of my way to get Shell/BP/Chevron. So, is it worth a crap or what?