car still diseling run on prob

Just because guy X gets away with running low octane with high compression don't mean you can. If your engine is built EXACTLY like his is you might be lucky enough to run it. Heck my 93 dakota with a 318, magnum heads and 9 to 1 compression had to have 93 octane gas so it didn't spark knock. Also you need to be running a 180 thermostat since your in a hot climate. A 195 thermostat will not open until the engine reaches 195 degrees and if the cool water cools the engine down to less than 195 it'll close again until the engine gets to 195. Put a 180 in it and it should run some cooler which can't hurt.