I bought my used Sears compressor 40 years ago from a friend for $15.00. I have treated it very badly for years and it still keeps going. My kids dumped it over in the back of their car once, and broke all the vains in the cooling pulley. I jigged it up and glued it back to together with JB Weld, and it has been that way for 34 years. I wish they still made stuff that would last like this thing has. I have used it to spray many airplanes, air up the tires on my lawn tractor that are always flat, (we have sand burs), and just the other day used it to power up the impact wrench to remove the nuts on the primary drive nuts on my Harley. Maybe I should change the oil in the compressor as I have not done that since I have owned it. I do oil the motor bearings once every few years though.