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East Central Iowa | I would follow the operators manual, unless there is a service bulletin to change to the other oil. There probably isn't much to worry about, but i'm a particular person and always follow what the books recommend. I would suspect that the 85W-140 is used for machines that travel down the road alot. Those finals are gonna heat up going road speed. Just running in the field it would probably be fine. | |
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Differences in gear oil
