Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGEO1993PRIZM L4-1600CC 1.6L DOHCREPAIR AND DIAGNOSISSPECIFICATIONSFLUID TYPE SPECIFICATIONSFUEL
1993 Geo Prizm L4-1600cc 1.6L DOHC
Fuel
1993 Geo Prizm L4-1600cc 1.6L DOHCSECTION Fuel
FUEL SPECIFICATIONS
The fuel must meet ASTM Standard: D4814 (U.S.).
Octane Requirements
Minimum octane recommended: 87 {(R+M)/2} octane where R = research octane number and M = motor octane number.
Gasoline With Alcohol
NOTICE: Do not spill fuel containing alcohol on the vehicle. Alcohol can cause damage to the paint finish and trim.
Methyl Tertiary-Butyl Ether (MTBE):
Fuel containing Methyl Tertiary-butyl Ether (MTBE) may be used, providing there is no more than 15% alcohol by volume.
Ethanol:
Fuel containing ethanol (ethyl) or grain alcohol may be used, providing there is no more than 10% ethanol alcohol by volume.
Methanol:
Fuel containing methanol (methyl) or wood alcohol may be used, providing there is no more than 5% methanol by volume. Use of fuel (gasohol) that contains more than 5% methanol can corrode metal fuel system components and damage plastic and rubber parts.
NOTICE: Do not use fuel that contains more than 5% methanol. Use of a fuel (gasohol) that contains more than 5% of methanol can corrode metal fuel system components and damage plastic and rubber parts.
The fuel must meet ASTM Standard: D4814 (U.S.).
Octane Requirements
Minimum octane recommended: 87 {(R+M)/2} octane where R = research octane number and M = motor octane number.
Gasoline With Alcohol
NOTICE: Do not spill fuel containing alcohol on the vehicle. Alcohol can cause damage to the paint finish and trim.
Methyl Tertiary-Butyl Ether (MTBE):
Fuel containing Methyl Tertiary-butyl Ether (MTBE) may be used, providing there is no more than 15% alcohol by volume.
Ethanol:
Fuel containing ethanol (ethyl) or grain alcohol may be used, providing there is no more than 10% ethanol alcohol by volume.
Methanol:
Fuel containing methanol (methyl) or wood alcohol may be used, providing there is no more than 5% methanol by volume. Use of fuel (gasohol) that contains more than 5% methanol can corrode metal fuel system components and damage plastic and rubber parts.
NOTICE: Do not use fuel that contains more than 5% methanol. Use of a fuel (gasohol) that contains more than 5% of methanol can corrode metal fuel system components and damage plastic and rubber parts.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.