transmission fluid question

[gambling209]

going to change the fluid in my tranny. have heard ford charged what they reccomend for it(fluid type). question is:
1. what kind of fluid?
2. how much and is there a drain on the torque converter?

 

[jdgleason]

You should need mercon V. I wanna say just to drain and replace the fluid its 11 quarts. Not a drain on the stock converter.

 

[Mark Kovalsky]

No even close on the fluid or the amount. Where did you come up with this useless information?

The transmission uses either MERCON SP or the newer fluid, MERCON LV. MERCON V will KILL your transmission, so I hope you didn't follow jdgleason's advice. Just draining the pan will take 5-7 quarts, it varies trans to trans depending on how much drains from the torque converter back into the pan. There is no drainplug in the torque converter.

 

[gambling209]

i was told that ford now reccomends the mercon LV over the SP. if this is true can you mix the two. what is left in the trans and the new thats is being put in the trans. i liked it better when all fords took type f.

 

[Mark Kovalsky]

Yes, you can mix the two. MERCON SP is being discontinued.

 

[Ipkyss]

Is the LV suppose to be better than the SP? I am just about to do a drain and refill and I have two cases of SP in the shop.

 

[Mark Kovalsky]

Use the SP.

 

[gambling209]

mark, the proceedure you wrote about changing fluid in the 4r100, can you do the same on the trans in my 2008. the 5r110 orwhat ever it is. which cooler line is the return on it? thanks

 

[Danbonzo]

Is the LV suppose to be better than the SP? I am just about to do a drain and refill and I have two cases of SP in the shop.

I was told that the SP is actually a very high grade trans fluid, I have not switched to the LV yet and will do so only when I can't buy the SP any longer.
Also I need on average 8 qts. to top off after dropping pan to change filter.

Wish I knew why SP is being discontinued. Probably works too good and not enough trannys are falling victim to planned attrition, corporate ladder decision to protect their bonuses? oke:

 

[mortal798]

It is Mercon LV now. I just replaced the Job 1 external filter and changed the fluid this summer. I believe I used 8 quarts. Buy a case and have a few left over.

 

[Mark Kovalsky]

mark, the proceedure you wrote about changing fluid in the 4r100, can you do the same on the trans in my 2008. the 5r110 orwhat ever it is. which cooler line is the return on it? thanks

No, you can't. There is an internal thermostat in the 5R110. It takes a heated flush machine to properly flush this transmission.

 

[Ipkyss]

My truck is a job 1 with the external filter. Is there any reason for me to pull the pan or just drain, refill, change external filter? I was planning to do the drain and refill now and in another 1k.

 

[Mark Kovalsky]

There isn't a need to change the internal filter until it's rebuild time.

 

[Ipkyss]

There isn't a need to change the internal filter until it's rebuild time.

Thank you

 

[kylebryan]

There isn't a need to change the internal filter until it's rebuild time.

Sorry to dig up an old thread but I have a question about fluid changing. Obviously its better to do a complete hot flush on the 08-10 transmission but is a drain and refill an adequate fluid change for these trucks? I have right at 70k on my truck and its had a complete flush at 30k. Should i do a complete hot flush or would i be safe by just draining and refilling? Thanks in advance!

 

[Mark Kovalsky]

The difference is that a hot flush will change about 95% of the fluid. Draining the pan changes about 50%.