Kaysupply,
Looks like you are correct... I emailed Baldwin, received the following reply.... oh well, better to be stuck with a filter than damage the Hydraulics... Thanks....
"Thank you for using Baldwin Filters. I do not recommend the use of the BT260-10 in place of the BT260. The BT260-10 is six micron nominal, while the BT260 is 26 micron nominal. If you have further questions, please feel free to contact
me.
Thanks,
TRAVIS R. WINBERG
Service Engineering Supervisor