</font><font color="blue" class="small">( My tractor has two very large filters for the hydraulic system (replacement cost well over $100 - so they must be of good quality). )</font>
mine does too.. I'd still change both. I'd feel horrible stupid if I let 150$ worth of oil and filters kill my 26K$ tractor /forums/images/graemlins/frown.gif
</font><font color="blue" class="small">( would not catch any and all trash (large, small, metal shavings etc...) )</font>
I'd also worry about other contaminants from manufacturing.. super fines, moisture that may have accumulated from setting.. or cleaning.. or prior to assembly.. etc. A gear tranny may not get the utf as hot as a hydro.. moisture may not flash off as well.
I just did a 'ful' lservice on my tractor.. between the (3) fuel filters, (1) oil, filter, (2) hydro filters, and (2) air filters, and (3) pails of oil and many tubes of grease.. I spent almost 300$.. but I feel better knowing that it is done..
Soundguy