filter change question

[RNJARMAN]

When changing the automatic transmission filters how many quarts will it take to replace the fluid?

[Evil Eye]

How many miles do you have on your truck? Bypass is every 15k miles and fluid change is every 30k miles. I don't recall if the pan filter is supposed to be changed at 120k or not, because I haven't gotten there yet. In total it will hold 16 quarts of Mercon SP fluid (only seen it available from Ford), and with a bypass and fluid change, it usually takes me between 8-10 quarts.

[cubalz]

What do you mean by "a bypass"?

[RNJARMAN]

43,000 and some change.. i have 10 qaurts at home.. i was going to change both filters, but i guess your saying i should only change the toilet paper one and drain and fill the tranny pan..

[Snake]

This is probably the most popular method for filter changes / transmission flushes:

1) Drain transmission fluid
2) Change external filter (toilet paper)
3) Refill transmission (approx 8 quarts)
4) Drive truck for 20-30 minutes
5) Drain transmission
6) Refill transmission (approx 8 quarts)

The transmission holds 16 qts but you won't get much more than 8 qts out when you drain.

As mentioned previously, the internal filter only needs to be messed with when you're rebuilding the transmission. Its more like a big open screen than a filter.

[cubalz]

How do you drain the fluid? Is there a plug or do you need to drop the pan? By the way, my truck is a 06 6.0L

[RNJARMAN]

there is a plug in the tranny pan..

[Evil Eye]

Originally Posted by Snake

This is probably the most popular method for filter changes / transmission flushes:

1) Drain transmission fluid
2) Change external filter (toilet paper)
3) Refill transmission (approx 8 quarts)
4) Drive truck for 20-30 minutes
5) Drain transmission
6) Refill transmission (approx 8 quarts)

The transmission holds 16 qts but you won't get much more than 8 qts out when you drain.

As mentioned previously, the internal filter only needs to be messed with when you're rebuilding the transmission. Its more like a big open screen than a filter.

You really only need to do steps 1-3 if you are changing every 30k miles. If not, I would agree.

[ipz2222]

Change the filter in the pan also. Allways!!!!!!!!!

[Evil Eye]

Originally Posted by ipz2222

Change the filter in the pan also. Allways!!!!!!!!!

The FOMOCO service procedure doesn't specify to change it through the 30, 60, 90k service intervals. For most vehicles I would whole-heartedly agree with you, but not in this case.