[ryano2121]

When I look at the Truckblog article on flushing the trans, it is only showing the first 2 steps of the procedure portion of the article. There is more, yes?

This is the article I am looking at: Truckblog - How-To Flush Ford's Torqueshift Transmission

 

[caryt]

For whats its worth both BTS and John Wood say to just drop the pan change the filter and refill every 30k...

 

[STG]

For whats its worth both BTS and John Wood say to just drop the pan change the filter and refill every 30k...

No......

I just spoke with John Woods and this is his recommended procedure:

Drain transmission pan.

Remove pan and clean.

Clean magnet.

Replace transmission pan.

Fill with 12 quarts od Mercon SP even though you just drained about 8 quarts.

Remove external transmission filter canister and filter element.

Tap filter canister for external tap/drain hose attachment, replace canister WITHOUT filter, connect suitable drain hose and place other end of drain hose in catch container OR

Place large container under external transmission filter mount.

Start engine and idle intil trans warms up (about 10 minutes).

When trans-cooler thermostat opens, remaining old fluid in cooler and lines will flow to external filter mount and out. Extra Mercon SP in overfilled case will replace old fluid.

When fluid stops flowing from external oil filter mount or drain hose, stop engine.

Install new external filter element, replace filter canister OR

Remove drain hose from tapped canister, close tap, remove canister, install new filter, replace canister.

Add Mercon SP to proper level.

W

 

[rdomurat25]

STG - Thanks for these instructions. I am a novice on the PSD, but have followed a procedure like this to flush a transmission before. Following this procedure, will I expect to pull out the additional four quarts, or more? Capacity is 18 qts, right? So would it be safe to allow 6 qts to come out of the tap? Is there any point where it would be unsafe for the transmission? Should this procedure be attempted in two (2) 3 quart procedures? Thanks.

 

[Mark Kovalsky]

I believe there is something missing from that procedure. Unless the trans and fluid are above 170°F 90% of what should be going out to the cooler line will be recirculated back to the pan, effectively mixing the old and new fluids. The TorqShift has a thermostat that limits the cooler flow to 10% of the warmed up flow when the trans is not hot enough.

 

[teamroper60]

I believe there is something missing from that procedure. Unless the trans and fluid are above 170°F 90% of what should be going out to the cooler line will be recirculated back to the pan, effectively mixing the old and new fluids. The TorqShift has a thermostat that limits the cooler flow to 10% of the warmed up flow when the trans is not hot enough.

And according to my aftermarket gauge, it is pretty tough under normal driving conditions to get the trans temp up over 170 degrees too! So it is gonna be difficult for the average joe to do a real trans flush at home..

 

[bismic]

And according to my aftermarket gauge, it is pretty tough under normal driving conditions to get the trans temp up over 170 degrees too! So it is gonna be difficult for the average joe to do a real trans flush at home..

I just installed a DashDAQ - and that is the absolute truth. I think I will have to be towing to get to 170 degrees!

 

[willingtonpaul]

empty running on my insight, the highest temp i have seen on my tranny is about 150.....

 

[69cj428]

Hotflush is the only way in my opinion. But then again what do I know?

 

[Mark Kovalsky]

Hotflush is the only way in my opinion. But then again what do I know?

I'm with you!

 

[bismic]

I'm with you!

I am too - I just can't find a dealership close by w/ the proper flush machine. They all say the run the truck engine to heat the fluid!

 

[vntperformance]

Great info here guy; thanks!

 

[SmokerSteve]

So the extra 4Q will flow out the bypass filter, then stop when the 4Q has flowed through?

 

[Mark Kovalsky]

No, it will keep flowing as long as there is fluid in the pan to feed the pump.

 

[SmokerSteve]

How much old oil will flow through?

 

[Mark Kovalsky]

Probably about 8 quarts.

 

[da-bees]

For whats its worth both BTS and John Wood say to just drop the pan change the filter and refill every 30k...

Could additional fluid be removed from cooler by either loosining in & out lines to alow gravity flow. If all fluid in cooler will not flow out by gravity,how bout appling low pressure to one side,either by pumping in new fluid or air? That leaves some in TC but every little bit helps.

 

[Mark Kovalsky]

That will get at most a quart out of the coolers, and leave almost 8 quarts in the torque converter.