Q: I fill up my gas tank and I put unleaded plus when it is required to put unleaded regular and I always put that on the highway I n

asked by on

I fill up my gas tank and I put unleaded plus when it is required to put unleaded regular and I always put that on the highway I noticed the temperature was going up and down not drastically but it was making movement and on a complete stop it shaked

My car has 63000 miles.
My car has an automatic transmission.

Hi Patricia. Thanks for contacting us today. While running the recommended fuel to your car is important, it’s less likely that the swap to a higher octane has created this temperature issue. It’s most likely that there is a different mechanical problem - such as an obstruction of debris in the cooling lines, or a faulty coolant temperature sensor or radiator thermostat. It’s also possible that a fuel system component is clogged with excessive carbon deposits or needs to be serviced. I think the best thing to do have a professional mechanic complete an on-site inspection to determine what is causing this problem - so that any repairs or service can be completed before damage occurs.

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. I fill up my gas tank and I put unleaded plus when it is required to put unleaded regular and I always put that on the highway I n

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: Starting issues in 1996 Cadillac Deville

Sure, it is 20 years old. Twenty years later, they can just wear out. You want to hope that it is the bad starter and not the worn-out engine because a worn-out engine will crank at the wrong speed, but...

Q: Brakes locked up after serpentine belt broke

Hi Greg. On older vehicles, a vacuum pump was used to provide power assist to brake systems. This pump was powered by the serpentine belt, so when it would brake, the brakes would lose significant power. However, newer brake systems...

Q: Should I get one

Hello. When it comes to foreign or domestic cars, it really comes down to the previous owner and how well the vehicle was maintained. I believe that any vehicle will last as long as it is properly maintained and not...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...