Transmission Change

[Cummins12V98]

Hey Darryl,

Sent you a PM since you said this. "changing the transmission fluid is very important to me."

Enjoy!

 

[Timd32]

Thanks everyone for your responses. I know transmission posts are many, but changing the transmission fluid is very important to me. This is my first post to the forum.

Welcome to the TDR, I see you have been around since Sept, but there is not a common welcome area.

Did not see your truck info.

But if you will find if you follow the normal or severe schedules based on your use, you will have many years of good service.

Fluid is of your choice and if it calls out for ATF+4 is basically the same no need to overspend its all fully synthetic if listed properly, it comes down to there are also alot close to ATF+4 and it usually comes down the the temperature range of the ATF+4 on the cold side of the range, it has some pretty extreme cold ranges, you can't void any warranties using the fluid of your choice but I try to stick with stuff that is listed for use by the mfg.

Good luck on your service.

 

[Cummins2014]

Thanks everyone for your responses. I know transmission posts are many, but changing the transmission fluid is very important to me. This is my first post to the forum.

I think its very important to many, it is to me. I change it according to whats recommended, and most importantly voiced the same by the many on this forum. That being pulling the pan, replacing the filters , and doing a partial fill. Thats worked for many thousands of miles on these 68RFE.

 

[Cummins12V98]

Herd mentality, it's actually the way shops make more money. The manual says to CHANGE the transmission fluid. Since it's so easy on the 68 PLEASE tell me why NOT change all the fluid!

This is my pan at 65k. I completely changed the trans fluid at under 15k so at least 50k on this fluid (AMZ/OIL). Oh yea I was towing 29k combined 2/3 of those miles.

 

[Jim W]

I just changed my transmission oil for the third time in the 68RFE, last week. My Mag-Hytec transmission pan looks just as clean as yours does with only draining the transmission oil from the pan and replacing the two filters. I do a partial oil change as per the O&M that the manufacture wrote. The fluid is changed between 50,000 and 60,000 miles.

 

[Cummins2014]

I just changed my transmission oil for the third time in the 68RFE, last week. My Mag-Hytec transmission pan looks just as clean as yours does with only draining the transmission oil from the pan and replacing the two filters. I do a partial oil change as per the O&M that the manufacture wrote. The fluid is changed between 50,000 and 60,000 miles.

Why do something that is not necessary is the point we all make here, if someone wants to waste fluid ,and time ,and money so be it. I will continue to do the herd mentality

 

[Cummins12V98]

I let my engine oil drain overnight, how many do that?

I bought a "Scavenger" for changing my Harley oil because there was well over 1/2 qt left in the engine. Cool part is my engine has 100% clean oil and it stays "looking" good for a long time. I have better oil reports from not having the old oil in there also.

 

[Cummins12V98]

"I do a partial oil change as per the O&M that the manufacture wrote."

Could you please show me that. All my book says is change fluid.

 

[Cummins2014]

"I do a partial oil change as per the O&M that the manufacture wrote."

Could you please show me that. All my book says is change fluid.

Looks like a standoff, where does it show undoing a transmission line ,and running it until the transmission runs dry. If you could show that, then some might want to listen, until then I will do whats recommended and works for the herd .

 

[Cummins12V98]

Looks like a standoff, where does it show undoing a transmission line ,and running it until the transmission runs dry. If you could show that, then some might want to listen, until then I will do whats recommended and works for the herd .

You do not have to let it run dry, reality it's no different than when you drain your pan. Transmission shops can easily change all the fluid. My method requires no special equipment.

NOT trying to convince anyone to do a darn thing. Just showing how easy it is to get all the old fluid out.

Many have PM'd me because they simply don't want to be hounded on the subject. I will keep telling my method and either people can learn from it or not I really don't care.

Used to be a place to share thoughts, ideas and methods on here.

Member since 2001 and the $35 a year is looking less and less desirable every day. Especially since the Political section has been ruined and removed!!!

 

[Cummins2014]

You do not have to let it run dry, reality it's no different than when you drain your pan. Transmission shops can easily change all the fluid. My method requires no special equipment.

It does require undoing the transmission line ,and letting it run until what then ??. Its either partial or empty ,which is it .

 

[AH64ID]

I let my engine oil drain overnight, how many do that?

I bought a "Scavenger" for changing my Harley oil because there was well over 1/2 qt left in the engine. Cool part is my engine has 100% clean oil and it stays "looking" good for a long time. I have better oil reports from not having the old oil in there also.

Do you scavenge the ~1qt that remains in your Cummins oil pan and the head?

EDIT ADD: I did the head once for fun, but not worth my time after that.

I have often wondered why they designed the oil pan to not fully drain, but then I remember it's never been an issue and it's been around a long time. I then wonder what makes me wonder about things sometimes

"I do a partial oil change as per the O&M that the manufacture wrote."

Could you please show me that. All my book says is change fluid.

Take a look in the FSM under fluid and filter replacement. There is no service procedure for anything other than drain and fill, aka partial fluid change. The refill procedure then differentiates on the fluid required for a fluid change vs an overhaul.

You can also look under fluid capacities and there are 2 quantities, service and overhaul. It's very obvious that Dodge/Ram/FCA only intend for a drain and fill for the "change automatic transmission fluid".

I've been know to go above and beyond on maintenance and it's always not a bad thing, just want to point out what the manual states. Heck, I did a drain/fill on my Aisin at 15K

 

[Cummins2014]

You do not have to let it run dry, reality it's no different than when you drain your pan. Transmission shops can easily change all the fluid. My method requires no special equipment.

NOT trying to convince anyone to do a darn thing. Just showing how easy it is to get all the old fluid out.

Many have PM'd me because they simply don't want to be hounded on the subject. I will keep telling my method and either people can learn from it or not I really don't care.

Used to be a place to share thoughts, ideas and methods on here.

Member since 2001 and the $35 a year is looking less and less desirable every day. Especially since the Political section has been ruined and removed!!!

It comes down to, what benefit is there in your method ?? I think that is the big reason you get so much opposition . Give us some benefits, there seems to be no proven benefit. You would think if its beneficial then there would be a written procedure to do what you keep posting here.

 

[Cummins12V98]

It does require undoing the transmission line ,and letting it run until what then ??. Its either partial or empty ,which is it .

Read my write up, it's very simple.

 

[Timd32]

Did the Russians start this thread? Thought they closed the Political section.

Edit.... only reason I say that is nothing divides us faster then an oil change thread.

 

[Cummins12V98]

It comes down to, what benefit is there in your method ?? I think that is the big reason you get so much opposition . Give us some benefits, there seems to be no proven benefit. You would think if its beneficial then there would be a written procedure to do what you keep posting here.

Would you change 1/2 of your engine oil? Would you suck out the rear and front diffs if they are the type that can be fully drained?

All clean fluid and it's vERY easy to do. If you had a FORD it would have a plug on the converter and if you had a rebuilt trans the same. Would you leave the fluid in the converter if it had a drain plug?

 

[Cummins12V98]

I do add 11-2/3 quarts because if I added 12 quarts to the engine it would be overfull. Supid design on the pan!

 

[Cummins12V98]

Would you change 1/2 of your engine oil? Would you suck out the rear and front diffs if they are the type that can be fully drained?

All clean fluid and it's vERY easy to do. If you had a FORD it would have a plug on the converter and if you had a rebuilt trans the same. Would you leave the fluid in the converter if it had a drain plug?

So what's the purpose of this Forum??? I thought it was to share different ways to do things. If it's not then let's all stick to what the book says.

 

[Cummins12V98]

Did the Russians start this thread? Thought they closed the Political section.

Edit.... only reason I say that is nothing divides us faster then an oil change thread.

No doubt!!! I am considering bagging this whole thing, been a member since 2001 but it's getting very old! Now especially with the Political section gone.

 

[Cummins12V98]

"I've been know to go above and beyond on maintenance and it's always not a bad thing, just want to point out what the manual states. Heck, I did a drain/fill on my Aisin at 15"

Same here, I will share my method with you when I figure out how to change all the fluid on the AISIN.

There was a day on this Forum when we would all put our heads together and figure out a way to do so. Sadly no longer so.