According to the spec sheet, we should not have to replace the oil for 3 years. We are using Mobil EAL 224H biodegradable. OF COURSE, it supposedly won't last as long in a hot climate (we just finished 17 consecutive days over 90 degrees - it rained today so it only got to 85... steambath anyone?).

I never heard back from Baldor via email. I'll see if I can call them Monday (if I can remember).