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41 B , Question

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RLA

06-09-2003 09:52:41




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Nearing the end of 2 1/2 year marathon on a 41 B row crop. Transmission Oil?? Is it not 85w140? I can't seem to find it in writing. Have differant opinions with the owner, who wants 80w90 because he it. He intends to use this machine & I thought somewhere I had seen the recomended oil 85w140? RLA




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Clooney

06-09-2003 11:07:22




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 Re: 41 B , Question in reply to RLA, 06-09-2003 09:52:41  
RLA, you would be much better off with straight 90 weight than either 80W90 or 85W140. Those multi-weight gear oils were developed to use in high speed road trucks & cars & basically stay at the low number until the oil temp gets up to +100�c or so. Most multi-weights are also easier flowing due to flow enhancers so they don't stick to gears nearly as well as the old straight weights.
~85W140 means it is 85 weight gear oil that doesn�t thin any more than 140 weight would at around 200�F [not sure of the exact temperature for gear oil rating].
~Probably the best gear oil to use is straight weight 90 GL-1 gear oil. Followed by the newer 90 weight GL-4 or 5.
~If the tractor is used hard enough to get the gear oil to 150�F then there might be some merit in the multi-weight gear oil.
~If the trans is noisy & the tractor isn�t going to be used in the winter then 140 weight GL-1 would be a good choice.

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chris in wi

06-09-2003 10:21:06




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 Re: 41 B , Question in reply to RLA, 06-09-2003 09:52:41  
I think that Deere reccomended 90 wt in the winter and 140 wt in the summer (or drain a gallon of the 140 wt in late fall and add a gallon of 10 wt).

So with a multi-vis oil, 85-140 would be al but perfect.

Correct me if I'm wrong...

Chris



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