Leads me to ask, just as oil analysis in undertaken to determine or verify type, quality and additive packages, and changes during use to further our knowledge and suitability, are there similar reports on gasoline?
Seems costs vary considerably among branded and also among the cheapo outlets. Have heard that Shell may be the "best", possibly due to their additive package, and BP also seems to be premium priced. My question is what are you getting for the extra dollars from these retailers? And similarly, is it beneficial or just marketing?
Generally, I fill-up based on the price, particularly as my families and my own vehicles use premium. Understand I have to remain with premium gasoline, but far from convinced I need to use premium brands too.