Should you flush or drain transmission fluid?

Transmission flushes are recommended every 45,000 miles or 3 years in place of a drain and fill or to replace fluid changes altogether. With a flush, all old fluid is removed with a flush machine and then new fluid is added, allowing the transmission to perform at its best.

Do you have to drain the oil before removing the filter?

Now, at which frequency is different and the oil must be drained before removing the filter, but quality oil should not have to be replaced if not burnt. Some cars with quality oil are known to have recommended this before. Leave a filter in too long, however, and serious damage can be done if enough debris collects in the oil.

When do you need to change transmission fluid?

When you want to change transmission fluid, you have two choices- Complete flush or Fluid change. The fluid change means draining the old fluid from the transmission pan and refilling with fresh fluid. Transmission oil flush means taking out old oil from the pan, cooler lines,…

Is it necessary to replace an oil filter every oil change?

Modern cars have better and better tolerances. Their oil changing frequency continues to drop so the whole filter issue is going to be even less of a burden. Besides, it’s a chance to look at a part of the car that you don’t normally see….

Why do you need to flush a transmission filter?

Before the filter can safely capture the contaminants, however, they can lodge in the narrow fluid passages inside the valve body, leading to poor shift quality. Performing a flush also allows you to use a flush additive to help clean the transmission and more effectively remove accumulated sludge and other contaminants.

Do you have to change the filter on a transmission?

Transmissions have filters that need to be cleaned or replaced. To do that, the pan must be removed. Some shops do both, remove the pan, change the filter, then “flush” it. The cooling lines are not big enough to to allow a high enough flow rate to “flush” anything.

How is a transmission fluid flush different from a drain and refill?

A transmission fluid flush, however, uses pressure to push all the old transmission fluid out of the system as it is refilled with new fluid. It is more of a fluid exchange than a drain and refill.

How often should I change the fluid in my car?

IMHO, just have the fluid and filter replaced every 30K miles, or so (whatever the recommended interval is for your car). You should not need to do anything else if you change the fluid/filter at the appropriate intervals.