Aisin vs 68rfe

[John Jensen]

Except it doesn’t. In a stock HD with the SO Cummins, the 68RFE Will handle whatever you are doing unless you are towing over 18k daily. At that level of use the Aisin would be almost literally required. But for everyday common uses of an HD truck the 68RFE will do it’s job.

This quote from motor trend says it perfectly:

The bottom line here is: If you are using your Ram 3500 for "commercial" hauling and/or towing applications where trailered loads are more than 18,000 pounds, the Aisin AS69RC is the automatic transmission for you. But for the rest of the Ram 3500 6.7L pickup owners, the Chrysler 68RFE will do the job as intended.


Sent from my iPhone using Tapatalk

I never said or implied that the 68RFE was inferior. I'm just replying to the comments that the 68RFE is better than the Aisin, which is not true. You and Motor Trend both say the 68RFE can't handle what the Aisin can. FCA doesn't put a 68RFE in the HO because it can't handle the power. Most, if not all tuners won't tune without also modifying the 68RFE because it can't handle the added power in stock mode. Tuners can tune an HO and have no need to modify the Aisin.

I follow several forums and have yet to hear of an Aisin failure, but read of a lot of 68RFE problems that are usually corrected with modifications. I imagine the 68RFE has made RexMax a small fortune.

 

[naplesbill]

I wasn’t disagreeing with you exactly. I was just saying that there is more to the character of both transmissions. I apologize if it came across differently.

As far as failures, I think most of those issues are on the previous generation. Also, I am the type that believes you can’t modify one end of the drivetrain without considering the rest. I honestly think tuners would tune the Aisin also if they could.


Sent from my iPhone using Tapatalk

 

[John Jensen]

I wasn’t disagreeing with you exactly. I was just saying that there is more to the character of both transmissions. I apologize if it came across differently.

As far as failures, I think most of those issues are on the previous generation. Also, I am the type that believes you can’t modify one end of the drivetrain without considering the rest. I honestly think tuners would tune the Aisin also if they could.


Sent from my iPhone using Tapatalk

Gotcha. No harm, no fowl
You bet the tuners would tune Aisin if they could. All of them are trying. My point is it isn't necessary as the stock Aisin can easily handle the engine tunes, the 68RFE cannot.

 

[Nick]

Except it doesn’t. In a stock HD with the SO Cummins, the 68RFE Will handle whatever you are doing unless you are towing over 18k daily. At that level of use the Aisin would be almost literally required. But for everyday common uses of an HD truck the 68RFE will do it’s job.

This quote from motor trend says it perfectly:

The bottom line here is: If you are using your Ram 3500 for "commercial" hauling and/or towing applications where trailered loads are more than 18,000 pounds, the Aisin AS69RC is the automatic transmission for you. But for the rest of the Ram 3500 6.7L pickup owners, the Chrysler 68RFE will do the job as intended.


Sent from my iPhone using Tapatalk

I had a 14 68RFE unless they changed things that tranny gets really warm in stop and go and pulling long steep grades on a hot day when towing . Like up into the 220s at times . Towing 15k . I have a Aisin in my 2020 and the warmest l have seen is 175 . The oil change interval is directly related to the tranny being used in towing operations . You can get the Mobil version of the ATF much cheaper . To sum it up for towing heavier loads you can’t beat it .

 

[John Jensen]

I had a 14 68RFE unless they changed things that tranny gets really warm in stop and go and pulling long steep grades on a hot day when towing . Like up into the 220s at times . Towing 15k . I have a Aisin in my 2020 and the warmest l have seen is 175 . The oil change interval is directly related to the tranny being used in towing operations . You can get the Mobil version of the ATF much cheaper . To sum it up for towing heavier loads you can’t beat it .

I've towed my 9800lb travel trailer with my 2020 HO Aisin out of the desert's 95 degrees up an 8 mile, 6-8% grade at 65mph under cruise control and tow haul and the tranny stayed at 163 degrees until we topped the grade at 165 degrees. I've never owned a truck and tranny that could do that.

 

[Brutal_HO]

I've towed my 9800lb travel trailer with my 2020 HO Aisin out of the desert's 95 degrees up an 8 mile, 6-8% grade at 65mph under cruise control and toe haul and the tranny stayed at 163 degrees until we topped the grade at 165 degrees. I've never owned a truck and tranny that could do that.

It's not going to heat up when the TC is locked.

Shifts and stop n go traffic will make the temps rise.

I've only seen 172 max on my HO is Colorado Springs rush hour pulling my meager 16K.