Polaris TX Starfire Owner's Manual page 37

TX STARFLAME ENGINES (Con't.)
Oil provides the only lubrication your engine gets. Keep in mind
these recommendations:
1. Use a good grade of both oil and gasoline ... gasoline not
less than 98% octane.
2. Always mix them in proper proportions, 16: 1 --thorough-
ly-- and in a clean container.
3. Keep surplus fuel tightly capped to prevent evaporation,
loss of volatility and power.
Too little oil means inadequate lubrication; too much oil means
spark plug fouling, rapid carbonization, and over-heated pistons,
all which may lead to engine damage and costly repairs.
The carburetor feeds the gas-oil mixture to the engine, mixing
the fuel and air to obtain the correct volatile mixture, thus
providing fuel for combustion, the lubricant, and a coolant for
internal surfaces.
NOTES:
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