tranny flush yes or no

[j cAT]

just a simple yes or no as to your opinon of this method...now being used by many service centers ...

[partsmgn]

Yes it's a great idea... if done correctly and replacing the filter when doing a flush not just cleaning the original filter like some outfits do

[Hungrycat7]

Yes. . .. If you have the ability to change it or have someone change it and have it done right why wouldn't you?

[MagicRat]

The tranny flush is a great profit-generator for repair shops. These procedures are IMO 'oversold' because the flush machines are quite expensive for the mechanic to buy, yet are quick and easy to use, so shops tend to try and sell as many flushes as possible to get the most out of their investment.
My local mechanic stresses the flush is a better alternative to a traditional fluid and filter change........... and claims that a filter change is not necessary.

As noted above, the most important thing is to remove the pan, clean it out and change the filter. So long as this is done, then a flush as well is fine. However, the flush is no excuse to leave the old filter in there.

[wiswind]

If they tell you that they are cleaning the filter without removing the pan....they are not correct.
Most cars require that the pan be dropped to get to the filter.

They should not add any "cleaner" to the process.

What most machines do is remove the old fluid and replace with new at the same rate as the old fluid comes out.
This does a very good job at EXCHANGING the fluid....which is what you want to do.

Many vehicles do not call for changing the filter on a regular basis.
However.....personal opinion only....but I like to do it at least every other time......when changing the fluid takes place regularly (I do mine once a year).

Most places will let you bring in your own fluid.....and charge you for the service.
This is a great idea if you have a particular fluid that you want to use.

Make sure to read up on the correct specification called for for your particular vehicle...and make sure that you use a fluid that meets this specification.

Modern transmissions need to have the fluid replaced at least when specified in order to provide you with reliable service over the life of the vehicle.
So this is a routine service that is WELL worth the cost.

[jonathanwang]

tranly flush ,is it really can work as it described. A new technology need time and success to prove it .

[j cAT]

[quote=wiswind]

I want to thank you for that info...I will see if a service center in my area has a fluid replacement system that will remove the fluid as it would normally circulate so as to not disturb the debris build up in the torque converter...also these flushes as you stated do not clean the filter and if do frequently service the tranny , I agree that every other time the filter should be replaced...

[wiswind]

The machine that I am thinking of....connects inline in the transmission cooler lines......then they run the motor.
The fluid flow through the transmission is just as it would be normally.
As the fluid comes OUT of the vehicle cooler line...and into the machine......it is REPLACED at the same rate INTO the vehicle with NEW fluid.

[jdmccright]

If it is done on a regular basis, then I have heard nothing against the procedure. A flush will replace just about all of the fluid present in the transmission/transaxle, including the torque converter. A simple pan drop and drain will only replace what is in the pan...any left in the radiator (for dual core coolers), separate tranny cooler, and the torque converter will remain.

However, I will note that many times in this forum and others that someone who has neglected their vehicle decides to do a flush in order to "make up" for that neglect, ends up flushing out a piece of debris or build-up that lodges in a valvebody passage or seal, and ends up causing the tranny to fail.

If this is your case, I would NOT recommend a transmission flush. You are better off doing the drain & drop, driving it for a few thousand miles, then drain & drop again...maybe even 3 times...so that any build-up can be redissolved slowly. The cost for 15 quarts of fluid (3 changes @ 5 qts per change) is still lower than a typical flush and ALOT lower than a tranny rebuild. Good luck!

[curtis73]

I like it. I do mine every once in a while, but I use two 5-gallon buckets; one empty and the other full of new tranny fluid. I connect some clear vinyl hoses to the cooler lines. The "out" line goes in the empty bucket, and the "in" line gets submerged in the clean fluid. When the "out" line runs clear, you're done.