Pontiac 350 "slightly" modified 10.38:1 measured - 93 octane, 10W40 Ford oil
Ford 390 "slightly" modified 10.22:1 measured - 89 octane (unless pulling the 16' trailer, then 93), 10W40 Ford oil
Ford turbo 2.3, factory original except SVO cam - 93 octane, 10W40 Ford oil
The only "miracle in a can" I have ever found is Rain-X, and I use it on all my vehicles.
25 years ago, when I just HAD to have something that started every day, I used Mobil 1 in the Ford in the winter. Now, I just push snow with the John Deere, and wait for the temperature to warm up to start anything else.
Jon.
__________________
"Good carburetion is fuelish hot air". 
"The most expensive carburetor is the wrong one given to you by your neighbor".
If you truly believe that "one size fits all" try walking a mile in your spouse's shoes!
Owner of The Carburetor Shop, LLC (of Missouri).
Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings.
Last edited by carbking; 08-30-2018 at 03:14 PM.
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