has anyone ever tried any fuel additives to help boost octane level up from pump 93 oct to 100LL.going to build an old ski-doo f-chassis turbo and was going to try to run a 50 pump and 50 av gas mix but its hard to bring enough av gas to mix at pumps.would be alot easier to just bring a 16 oz. bottle of additive-i think klotz makes some good stuff-not sure just wondering if anyone has used it.thanks