Transmission Flush Question.
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Lead Driver
Joined: Jan 2006
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From: Hartford, WI
Transmission Flush Question.
I have heard mixed answers on this method where they flush the fluid to get as much out as possible and filter change. Anyone know what the engineering department says? Sure, I'm selling it and it will be the best thing in the world for you, your family and children and their children but have transmission engineers really weighed in on it? TIA
Lead Driver
Joined: Feb 2005
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From: The Great State of Texas
Maybe Mark Kovalsky will chime in on this topic. I recall he wasn't a fan of these. Simply drain the fluid and replace the filter should be good enough. If you want to flush, just simply add another drive cycle to get the transmission hot and circulate the oil and drain and refill.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,738
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From: SE Florida
What I am not a fan of is using flush chemicals in the transmission.
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Lead Driver
Joined: Jan 2006
Posts: 7,308
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From: Hartford, WI
Your recall is poor. I wrote a procedure published on this site about how to flush an automatic transmission. It was written before thermostats became standard, so it will not work on this transmission. Someone came up with a method on how to flush a thermostatic controlled trans here: https://www.ford-trucks.com/forums/1...-exchange.html It may take some modification to work with this trans, but it is an excellent method to change the fluid.
What I am not a fan of is using flush chemicals in the transmission.
What I am not a fan of is using flush chemicals in the transmission.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,738
Likes: 2,666
From: SE Florida
The machines are fine. They use the transmission pump for power, so there is no issue using one of them.
The only thing to watch for is that they need to heat the fluid to keep the thermostat open. If not, it will just add and remove the new fluid.
The only thing to watch for is that they need to heat the fluid to keep the thermostat open. If not, it will just add and remove the new fluid.
More Turbo
Joined: Dec 2003
Posts: 534
Likes: 168
From: Park County, CO
I wonder how the thermostat works in the 10R140? I was under the assumption that the heat exchanger between the coolant and transmission provided heat when the transmission was cold and removed heat when the transmission was too hot (thermostat not required). Does the 10R140 only use the coolant heat exchanger when the trans fluid is too hot (thermostat required)?
Tuned
Joined: Dec 2019
Posts: 250
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From: Fredericksburg VA
Trans flush
I've heard great things about BG transmission flushes. Are they recommended? Obviously you wouldn't flush a transmission with black fluid.
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Lead Driver
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From: Hartford, WI
Wouldn't you have more problems than the flush if the fluid were black?
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I see that you have a '17. I just did my '19 last week. The filter in mine had never been touched at 82,000 miles so I pulled the pan to replace the filter. Filter was covered in sludge, magnet was also. So it needed a new one. I cleaned the magnet as well. I reinstalled the Dorman direct fit pan that has the drain plug in it. Now in the future I will simply do drain and fill every 30,000 miles. $100 for fluid every 30k is nothing. Should make the trans live a very very long life.
In my opinion this is a better way to do it rather than just "flushing" and leaving in the old filter.
In my opinion this is a better way to do it rather than just "flushing" and leaving in the old filter.
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Lead Driver
Joined: Jan 2006
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From: Hartford, WI
I see that you have a '17. I just did my '19 last week. The filter in mine had never been touched at 82,000 miles so I pulled the pan to replace the filter. Filter was covered in sludge, magnet was also. So it needed a new one. I cleaned the magnet as well. I reinstalled the Dorman direct fit pan that has the drain plug in it. Now in the future I will simply do drain and fill every 30,000 miles. $100 for fluid every 30k is nothing. Should make the trans live a very very long life.
In my opinion this is a better way to do it rather than just "flushing" and leaving in the old filter.
In my opinion this is a better way to do it rather than just "flushing" and leaving in the old filter.
Hotshot
Joined: Oct 2015
Posts: 19,711
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From: Wyoming
It's not from Ford but Nissan issued a bulletin to never use a power flush machine on their transmissions (at least for the Titan). They may have referenced the BG machine in particular, but it's been at least 10 years since I read the bulletin.
Letting the transmission pump out the fluid is the way to go. Or, do a spill-n-fill of what's in the pan.
Letting the transmission pump out the fluid is the way to go. Or, do a spill-n-fill of what's in the pan.
Laughing Gas
Joined: Aug 2021
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Thats what I did on my last GM at 50k. Just don’t let that pump run dry. I switched over to Amsoil at the same time. I don’t know about running Amsoil in these new 10 speeds though.
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Lead Driver
Joined: Jan 2006
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From: Hartford, WI
It's not from Ford but Nissan issued a bulletin to never use a power flush machine on their transmissions (at least for the Titan). They may have referenced the BG machine in particular, but it's been at least 10 years since I read the bulletin.
Letting the transmission pump out the fluid is the way to go. Or, do a spill-n-fill of what's in the pan.
Letting the transmission pump out the fluid is the way to go. Or, do a spill-n-fill of what's in the pan.
Hotshot
Joined: Oct 2015
Posts: 19,711
Likes: 12,850
From: Wyoming
IDK if that is old news or what but THIS talks about a "fluid exchange" which is what I think a flush is. I'm guessing that you and I can say any nonsense we want but if it is a dealer, I would imagine they have to make sure that it has Nissan's blessing.
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Lead Driver
Joined: Jan 2006
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From: Hartford, WI
Perfect cover. "Oh, that's transmission fluid, not blood.". Sure it is, buddy.