Morning everyone,
1969 Javelin 390 4 speed
What additives should I be running in my engine and my fuel if any?
Engine has no modifications and using premium gas
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Thread: Additives
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03-24-2006, 07:07 AM #1
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Additives
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03-24-2006, 04:31 PM #2
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Without any doubt you should be running at least an octane boost. I run Lead Supreme 130 which is both a lead additive and octane booster. It's not easy to find though. Your 390 has a 10.2:1 compression and when new 100 octane MINIMUM was recommended. If you just run premium pump gas without octane boost you run the risk of breaking pistons.
.
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