Trans service - Dodge Cummins Diesel Forum
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post #1 of 33 (permalink) Old 05-14-2019, 05:35 PM Thread Starter
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Trans service

I have a 68rfe 6 speed trans. I plan to do service this weekend. When I pull the pan and filters i plan to let it drip till it stops. I have read where guys only use 7 quarts on this service. Does this seem right. If I let it drain over night will it be more than 7? 2500 2014 ram 4◊4 ctd

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post #2 of 33 (permalink) Old 05-14-2019, 05:50 PM
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"Drip till it stops" HA,HA,HA!!! It'll drip FOREVER!!!

I wouldn't(and don't) fool with leaving it drain that long.

I don't recall how many quarts for a stock pan drain, maybe as much as 8 quarts, buy extra, you can always use it for the next change.
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post #3 of 33 (permalink) Old 05-14-2019, 05:56 PM
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Quote:
Originally Posted by Ltngdrvr View Post
"Drip till it stops" HA,HA,HA!!! It'll drip FOREVER!!!

I wouldn't(and don't) fool with leaving it drain that long.

I don't recall how many quarts for a stock pan drain, maybe as much as 8 quarts, buy extra, you can always use it for the next change.
What @Ltngdrvr said. I haven't serviced my 68 yet, but I've done a couple servicings on a 45RFE. I once left the pan off overnight while doing some work on the valve body and it continually dripped.

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post #4 of 33 (permalink) Old 05-14-2019, 06:33 PM
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Trans service like this is just a small blood transfusion, not a complete change, just freshening it up, getting some fresh additives in, so going long on the drain time just isn't at all critical.

And, in 455K miles, and 7 trans services (60K interval), the old fluid has always come out looking like I'm wasting my time changing it.

So, no need to get too worried about getting all the old fluid out, especially since there will still be about 6-7 quarts left in the converter and internal passages that you will never get drained out on a pan drop change.

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post #5 of 33 (permalink) Old 05-14-2019, 06:50 PM
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@Berkly1 You might find this thread useful:

https://www.cumminsforum.com/forum/0...id-change.html
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post #6 of 33 (permalink) Old 05-14-2019, 10:55 PM
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get 10 quarts. i used 9 for mine when i replaced both filters.

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post #7 of 33 (permalink) Old 05-14-2019, 11:29 PM
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Have you done the trans recall yet? The dealership did mine, all I had to do was pay for the filter
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post #8 of 33 (permalink) Old 05-15-2019, 12:10 AM Thread Starter
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Thanks guys
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post #9 of 33 (permalink) Old 05-15-2019, 12:53 AM
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Get 10, I used 9 last time. I usually let it drain about an hour.

Since we’re on the topic, what’s the general opinion of the upgraded machined filter screw? I’ve been considering ordering one for next service, but have read mixed things.. some say it’s not neccesary as long as you don’t over torque?
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post #10 of 33 (permalink) Old 05-15-2019, 09:44 AM Thread Starter
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Can u share what screw u are talking about
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post #11 of 33 (permalink) Old 05-15-2019, 10:02 AM
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Quote:
Originally Posted by WhiskeyThrottle View Post
Get 10, I used 9 last time. I usually let it drain about an hour.

Since weíre on the topic, whatís the general opinion of the upgraded machined filter screw? Iíve been considering ordering one for next service, but have read mixed things.. some say itís not neccesary as long as you donít over torque?
It replaces the plastic nipple that comes on the trans spin on filter.

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post #12 of 33 (permalink) Old 05-15-2019, 11:46 AM
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Yeah, the threaded insert for the oem spin-on filter inside the pan, is plastic. And, lots of people apparently think you need to gorilla tighten that filter, and end up breaking or stripping the threads on that little plastic part.

I've never had an issue with it. Worst part was the first change, getting the original filter loose, they come from the factory like the original engine oil filter, so tight you almost have to destroy the filter to get it off. It's because they were assembled by a machine originally, not installed by human hands. I used my large channel lock pliers to remove my original filter, but just hand tightened the new filter. Just have to make sure you have a clean, fluid free filter so you can get a good grip on it. I also use mechanics gloves for better grip.

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