Now I can go to town and buy compressor motor oil all day long.
The problem is the cost.

Can anyone tell me why a synthetic 5w30 would Harm a compressor? 5 HP elecrtic 30 gal. Like that would make a differemce.

When you ask about viscosity for a compressor where they sell 'compressor oil' . No one has given me an answer I would take to the bank.

What's your thoughts?