The six spd manual tranny in my 2006 Freightliner M2 is running too hot. I just had it rebuilt due to this problem and the prior rebuild only lasted 10 mths. What's causing this issue and how can I address it? So far the mechanics I've talked to are clueless and loving the rebuilds!
Overheating M2 Transmission
Discussion in 'Freightliner Forum' started by Bumpnrun, Oct 27, 2011.
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If you have the proper oil and NO additives, or Lucas, and the correct level there is no reason to have a heating problem.
Heat will damage the oil, but if the oil is not destroyed, it will not have anything to do with the transmission being damaged.
I take it they have put in synthetic oil, and have a heat tape on it, that gives the max temperature the transmission got to. -
I have synthetic in it w/ the correct level. It runs so hot I cannot step in the shifter area barefoot. I was thinking of putting a pump and cooler on it but that seems extreme...still cheaper than another trans in a year though...
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I have never seen a cooler on a 6 speed but all things are posible. It would have to be engine run, and it is much preferable it is air cooled, water cooled on a plate off the PTO cover but that opens a whole can of worms with contamination.
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