Fuel FAQ’s

Q. Can Gulf MACH unleaded racing fuels really replace any leaded or unleaded race fuel from 105-116 octane?

A:  Yes. Gulf MACH unleaded racing fuels have more detonation resistant than the most known high octane leaded fuels, yet they have a tighter, more engineered burn characteristic. This gives you the best of both worlds: It will handle gobs of boost & timing, yet you’ll maintain sharp throttle response and off-idle performance. It’s almost impossible to “over octane” with Gulf MACH unleaded racing fuels, so if you’ve been using any 105-116 octane race fuel, try Gulf MACH!

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Q:  How long is the shelf life of Gulf racing fuel?

A:  Gulf Legend and MACH racing fuels contain no ethanol and have shown to have a shelf life (unopened) of 2 years and up to a year after being opened. Gulf MARINE and ATV fuels contain Bio butanol and has a shelf life similar to pump gas. All 3 Gulf Racing Fuels have significantly more storage life than leaded or heavily oxygenated race fuels, so stock up!

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Q:  What is the idle stoich of Gulf MACH 116?

A:  The idle stoich falls between 14.77:1 and 15, depending on the application.

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Q:  What is ISOBUTANOL?

A:  an advanced biofuel, to replace ethanol. Isobutanol is an EPA Approved oxygenate containing 30% higher BTU than ethanol, while producing power beyond typical ethanol-based gasoline. Read more about Isobutanol and the advantages of ethanol-free fuels.

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Q:  How easy is it to switch from 116 leaded to Gulf MACH 116 in terms of tuning?

A:  It’s quite easy. Gulf MACH 116 is a very dense fuel (specific gravity is .76) and tends to run 3-4% richer if run on the same tuning as a non-oxygenated, leaded race fuel. In other words, it’s safe to baseline and fine tune from your starting point. If you’re currently running an oxygenated fuel, you’ll need to lean out your tune significantly before running Gulf MACH 116, otherwise it will run quite rich.

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Q:  Can I use Gulf MACH 116 to kill the weeds in my yard?

A:  Not unless you enjoy prison.

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