Polaris 2003 Frontier - Manual (Page 68)

66
OPERATION
Fuel
The fuel used in your Polaris engine is as important to engine life and
performance as the lubricant. Your Polaris engine is designed to run on
a minimum of 87 octane non-oxygenated or 89 octane oxygenated
pump gasoline. There’s a great deal of variability in the quality of the
87 octane gasoline available across the country, so we encourage the
use of premium fuel when possible.
Fuel System Deicers
If you use non-oxygenated fuel, Polaris recommends the regular use of
isopropyl-based fuel system deicer. Add one to two ounces per gallon
(8-16 milliliters per liter) of gasoline to prevent engine damage
resulting from fuel system icing and lean fuel mixtures. Never use
deicers or additives containing methanol. See page 128 for the part
numbers of Polaris-recommended products.
If you use oxygenated fuel containing ethanol, additional alcohol
deicers or water absorbing additives are not required and should not be
used.
Using fuels with a lower than recommended octane or operating with
obstructed fuel systems will result in serious engine damage.
Always use the recommended fuels for your machine.
CAUTION
Prolonged exposure to petroleum based products may damage
paint. Always protect painted surfaces when handling fuel.
CAUTION