Users of the big gassers: Dodge 6.4, GM 6.0, Ford 6.4....... Can the lower octane be used or do you need the higher octanes????? Colorado we have either 85, 87, or I think 91..
I do not trust what the Consumer Reports is saying. Our fuel terminal gets its products from the refineries near Billings, MT and Great Falls, MT via pipeline. Additives are added at the terminal and the product is delivered to various brands of stations. Western Washington gets their fuel from different refinery companies around Puget Sound.