How often do you change your Air compressorâÂÂs oil and Air filter? Unless I get lucky, I have lost my 1972âÂÂs model # 106.153542 SearâÂÂs Twin Cylinder Air CompressorâÂÂs manual to see the recommendations.

What weight and type of oil goes in Sears twin cylinder air compressor model 106.153542? 30wt HD oil is what I feel I have used vs a 30wt non-detergent. I saw a good discussion of detergent vs non detergent on this site but would like to know what the manual recommend.

1. 70s - 80s when I used it short periods weekly I feel I changed them at least every 2 yrs (mainly cleaning filters).

2. I have not ever seen the oil low or bad looking at the yearly checks.

3. The most frequent check is for moisture in the tank. I added a þâ galvanized pipe as a reservoir (to help save the tank) and easy draining access.

4. A dated maintenance info tracking board (plastic) is wires to the compressor.

Thanks!