Automatic Transmission Fluid

Automatic transmission fluid is a lightweight oil that is used to operate the hydraulic mechanisms in an automatic transmission, provide lubrication, and act as a coolant for the transmission. When new, it's usually a cranberry red color.

Symptoms of a Bad or Failing Automatic Transmission Fluid

  • Rough shifting
  • Delayed shifting

Automatic Transmission Fluid Related Repair Advice

  • It is critical to use the correct fluid type when adding or servicing the automatic transmission fluid
  • We recommend changing the transmission fluid every 30,000 to 40,000 miles under normal conditions. If the transmission has a filter, that should be replaced as well. If you operate your vehicle under severe conditions (e.g. extreme weather, towing, or a lot of stop-and-go traffic), the transmission should be serviced every 20,000 to 30,000 miles.
  • Your repair shop may recommend a transmission fluid flush, which will require up to 16 quarts of transmission fluid. This will increase the parts and labor price when compared to a normal drain and fill of the transmission.
  • Not servicing the transmission fluid at the recommended interval can result in extremely degraded fluid. Servicing a transmission with high mileage and extremely degraded fluid can result in shifting issues after the service. The clean fluid can actually remove varnish build in the valve body. As a result, one or more valves many not seal as well as before the service.

No comments yet...

Sign in to comment

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
Need to drain transmission fluid i am diy person....where do i replace fluid and has 78k miles with no probl...
Where to check transmission fluid