trans help

[brando4905]

I lost a V730 a few years back right after I made the TranSynd switch.

[Brassman]

I'm sure glad we had a discussion on Allison transmission fluids. It's all perfectly clear now.

[chev49]

so is it better just to use the c4 stuff if not synthetic or the old ford atf?  i hath c4 in mine right now and am gonna change it again when i do my filter...

[belfert]

My B500 transmission runs within one to two degrees of the engine coolant temp.  I have a oil to water cooler for the transmission so I'm not surprised at that.  I do run Transynd now, but I have my doubts the transmission would run much warmer on regular ATF.

[buswarrior]

Depends where the temp sensor is placed.

Installed where the output is hottest would be most desirable, some are placed where they just confirm the cooler is working, which doesn't help a busnut identify impending disaster that excess output heat indicates.

happy coaching!
buswarrior

[belfert]

I believe the temp sensor on the B500 is something Allison put in at the factory.  The transmission temp is reported by the WTEC electronics.  I have no idea where the sensor is located.  You're right that knowing the input temp would of no value.  I dod notice that when the bus is first run that it takes time some before the engine and transmissions temps match up.

[luvrbus]

The torque converter is where the temps should be taken from some do have a sender on the pan,

I know the argument about lower temps with the synthetic oils but I have never saw it when ran through a engine type cooler maybe with a air cooler JMO

good luck