New 2018 69RFE vs Aisin Regrets? - Page 2 - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

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post #13 of 17 (permalink) Old 08-22-2019, 06:38 PM Thread Starter
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I sure am glad I posted. I really like my truck and the plan was for a long term vehicle. With the information you have all shared I am back on track. You have all helped a lot. Thanks for your time in posting your experiences.


2018 3500 Laramie CC, 4x4, SRW, 68RFE
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post #14 of 17 (permalink) Old 08-22-2019, 07:02 PM
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68 RFE is total junk, mine has only gone 477K, and I expect it to self destruct in about 500K more miles, no way it'll make it to a million.

FCA has continually updated the 68, and most failures are from abuse or neglect.

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post #15 of 17 (permalink) Old 08-22-2019, 07:10 PM
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Quote:
Originally Posted by 07Dually View Post
I had a 2007.5 with the 68RFE and now my son has it. It is still running strong at over 160K ( of which over 50K has been towing a 12.5-13K 5th wheel).
I now have a 2017 with the Aisin and a little over 50K on it (of which 27.5K has been towing a 12.5-13K 5th wheel).
The Aisin has a lower 1st (reminds me of a granny gear) and 2nd gear compared to the 68RFE with 3rd, 4th, 5th & 6th ratios being essentially the same. The result is a larger RPM drop when going from 1st to 2nd and also from 2nd to 3rd with the Aisin vs the 68RFE.
When shifting it feels to me as if the Aisin has a little slower gear change with a more noticeable unlock and lock.
The 2017 (with the Aisin) has 3:73 gears and the 2007.5 (with the 68RFE) has 4:10 gears which means the overall ratio in 1st gear is nearly the same in both trucks.
Bottom line after driving both - I prefer the Aisin with the 3:73s, especially when going 65 mph or so - however I would not hesitate to have another 68RFE and actually prefer the closer ratio when shifting from 1-2 and 2-3.
Having both in equally geared trucks, I agree that the gear ratio of the Aisin between 2nd and 3rd is too wide. I know my C&C is detuned and it possibly wouldn't be an issue on a regular pickup thats not detuned, but i dont know how many times Ive been accelerating on a hill and get a 2nd to 3rd shift....then the truck figures out it cant pull in 3rd then drops right back to 2nd. Or it just barely pulls lugging at 1200rpm till the hill flattens out. Shifting from 1st to 2nd at 6mph really blows my mind as well. If i shift it using the ERS buttons it pulls like mad. My only complaints of the Aisin. It does feel more "solid" with a load behind it than the 68rfe.

Im happy with my 68rfe. CTT got the shift points right and I much prefer the 68rfe gear ratios as well.

2013 3500 Laramie 68rfe 3.73 HPP

2018 3500 Tradesman Aisin 3.73 C&C CM TM deluxe bed
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post #16 of 17 (permalink) Old 08-22-2019, 08:05 PM
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You already have the 68. If it blows up it blows up, but it probably won't.

But I didn't hesitate for a split second to check the Aisin box when I ordered. And I should add that it was ordered to tow with, not for basic driving.

Maybe if we start telling people that the brain is an app, they will start using it?

'14 1500 V6, '17 3500 C&C, plus a '19 3500 6.4 in the household.
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post #17 of 17 (permalink) Old 08-22-2019, 09:24 PM
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If it eases your mind any, a younger friend of mine has a 2012 that is tuned, lifted with big tires and is driven with a lead foot. In other words, all the things that are suppose to ruin the 68RFE. He has over 300,000 without any transmission issues. My own has also been trouble free towing 10K frequently.
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