On Oct 30, 12:33*pm, (Murriel) wrote:
Model GT2550

Instuction manual says to change the transmission filter after the
first 10 hours of use, but that you can replace the fluid that was
drained out as long as it was kept free from contaminants.

1) Why is it necessary to replace this filter after the first 10
hours?

2) Doesn't it seem self-defeating to put the "used" oil back in the
transmission case? *Thanks.

Any machining operation leaves metal bits hiding from the most
determined cleaning operation. From experience, the manufacturer knows
that the filter will collect (hopefully) all the nasties that normal
operation will break loose. Therefore, replacing the filter is cheap
insurance. Since the oil has already been filtered, there is no reason
to think it is contaminated. So why not reuse it? Seems sensible to
me.

Joe