Transmission Oil...change...flush or Not?
04-19-2016, 02:40 PM
#11
Senior Member
This implies that dirty/used up/burnt fluid works great and putting clean fluid in somehow causes irreparable damage.
No truth to that.
A flush is simply exchanging old fluid for new as it is pumped out of the trans to the cooler. This ensures that all the fluid is actually changed as opposed to what remains stuck in the convertor, which does not drain naturally.
The argument then is that the new, fresh, clean fluid is bad for a transmission. Doesn't that sound like an illogical argument?
The reason it seems so many people have failures after a flush is because they waited until they had issues before they performed transmission service. The trans was already failing. Blaming it on the recent maintenance does not make it true.
Thats like developing a knock in your engine because you never change the oil. Then changing the oil and having the engine fail and blaming it on the oil change.
Last edited by Dirttracker18; 04-19-2016 at 02:47 PM.
04-19-2016, 02:56 PM
#12
Really good video on the subject:
Theres truth to both sides, however if you run into issues due to flushing the fluid, the transmission was probably already on its way out. If you suspect its in rough shape, leave it be. If it seems okay, flush it. I had mine flushed for the first time at 200,000 kms and its been running fine since.
Theres truth to both sides, however if you run into issues due to flushing the fluid, the transmission was probably already on its way out. If you suspect its in rough shape, leave it be. If it seems okay, flush it. I had mine flushed for the first time at 200,000 kms and its been running fine since.
Last edited by dillons; 04-19-2016 at 03:00 PM.
04-19-2016, 03:53 PM
#13
Old wives tale.
This implies that dirty/used up/burnt fluid works great and putting clean fluid in somehow causes irreparable damage.
No truth to that.
A flush is simply exchanging old fluid for new as it is pumped out of the trans to the cooler. This ensures that all the fluid is actually changed as opposed to what remains stuck in the convertor, which does not drain naturally.
The argument then is that the new, fresh, clean fluid is bad for a transmission. Doesn't that sound like an illogical argument?
The reason it seems so many people have failures after a flush is because they waited until they had issues before they performed transmission service. The trans was already failing. Blaming it on the recent maintenance does not make it true.
Thats like developing a knock in your engine because you never change the oil. Then changing the oil and having the engine fail and blaming it on the oil change.
This implies that dirty/used up/burnt fluid works great and putting clean fluid in somehow causes irreparable damage.
No truth to that.
A flush is simply exchanging old fluid for new as it is pumped out of the trans to the cooler. This ensures that all the fluid is actually changed as opposed to what remains stuck in the convertor, which does not drain naturally.
The argument then is that the new, fresh, clean fluid is bad for a transmission. Doesn't that sound like an illogical argument?
The reason it seems so many people have failures after a flush is because they waited until they had issues before they performed transmission service. The trans was already failing. Blaming it on the recent maintenance does not make it true.
Thats like developing a knock in your engine because you never change the oil. Then changing the oil and having the engine fail and blaming it on the oil change.
Now, if the transmission functionally and mechanically is fine, there will be no difference between a flush and fill and an exchange, side effect wise.