Q: Can my 1999 town car use 89 octane even though it says 91

asked by on

Can my car use 89 octane even though it says 91 on gas cap

My car has 110000 miles.
My car has an automatic transmission.

If your vehicle says premium fuel only on the gas gauge then you should use only the premium fuel. In a pinch you can run the 89 octane fuel and try not to do any heavy acceleration to avoid engine pinging or pre-ignition. The pre-ignition can cause internal piston damage if excessive.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Can my 1999 town car use 89 octane even though it says 91

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Security light flashes rapidly trying to start truck everything comes on but it won't start

You may still be in lockout and the security system is keeping you from starting the car. When the car was entered without the key, it no doubt triggered the immobilizer and that will have to be reset. It's might...

Q: Air suspension system issue on 1997 Lincoln Mark VIII

Hello. Thanks for writing in about your 1997 Lincoln Mark VIII. I suggest that you have a technician test a power and ground going to the air ride relay and pump. Some particular make and model have experienced corrosion on...

Q: O/d light blinking car wont accelerate

Hi Valerie. Thanks for contacting us tonight. When you have electrical fuses that continually blow, it means you have an electrical short or an open electrical relay that is the root issue. The best way to determine where the fault...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...