Q: Switched to synthetic high mileage (5w-30) for the first time and have noticed power loss and faint smoke coming out of tail pipe?

asked by on

Switched to synthetic high mileage (5w-30) for the first time and have noticed power loss and faint smoke coming out of tail pipe. What do you think this could be from? Engine is quieter and seems okay but ever since I switched my "get-up & go" has got up and went. Any help is appreciated

My car has 209000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. The smoke coming from the tail pipe is not from the oil you are using. The fuel pressure and computer should be checked to see if there is a fuel pressure or computer problem. You may have a loose air filter housing between the MAF and the throttle body. If you would like further help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect this loss of power in the car for you, and make or suggest any repairs as needed.

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. Switched to synthetic high mileage (5w-30) for the first time and have noticed power loss and faint smoke coming out of tail pipe?

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: I have a 2001 Toyota Tundra 4.7 V-8. When replacing the valve cover gasket, what should I torque the valve cover back to when rein

The valve cover bolt is tightened to 60 inch pounds.

Q: Low wash light

The washer fluid tank has a level sensor. The sensor floats in the tank. When the fluid gets low, the sensor makes contact with the metal ring around the float and the light comes on. Sometimes the float stays stuck...

Q: How do I know if my tie rod is bad

When the tie rod end starts to wear, it's commonly due to excessive abuse (like driving on bumpy roads or being hit by blunt objects like curbs and pot holes). Frequently, the part that wears out in the tie rod...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.