Keyblazer
Well-known member
Few years back I picked up a used Speedaire Vertical Compressor.
Two Stage, 7.5hp, on a 80g vertical tank. I think its prob 30 years old, and Ive had it maybe 8 of that.
It has served me very well, but I realized the other day, I have never changed the oil.
So, I tried to find out the correct oil, and the list in the Manual reads:
Quick Reference
Recommended Oil (2 Options)
Single viscosity SAE 30 ISO100 nondetergent compressor oil. Part number 1WG50 or
4ZF21.
10W30 synthetic oil such as Mobil 1® or 1WG49.
Oil Capacity
Approximately 2 quarts
I have M1 engine oil around.... but can that be true?
Two Stage, 7.5hp, on a 80g vertical tank. I think its prob 30 years old, and Ive had it maybe 8 of that.
It has served me very well, but I realized the other day, I have never changed the oil.

So, I tried to find out the correct oil, and the list in the Manual reads:
Quick Reference
Recommended Oil (2 Options)
Single viscosity SAE 30 ISO100 nondetergent compressor oil. Part number 1WG50 or
4ZF21.
10W30 synthetic oil such as Mobil 1® or 1WG49.
Oil Capacity
Approximately 2 quarts
I have M1 engine oil around.... but can that be true?
