Brute Air Compressor Oil

[Red91]

Hello all. I am going to get a Brute air compressor running again. Specifications are as follows:
-10 Gallon
-125 psi
-2.5 HP
It is electric, and I am trying to figure out what oil the pump uses. I do not have the manual, and it isn't printed on the compressor itself. I was thinking ND30. Thanks in advance.

 

[dave123]

Use a ISO 100 compressor oil.

 

[Red91]

I believe we have that at the shop. I can't recall if it list itself as a 30, or an ISO viscosity.

 

[NHGUY]

32 is a 10W 46 is a 20W 68 is a 30W 100 is a 40W
ISO vs SAE

 

[Red91]

Ah. I've never looked into the translations. So, if 100 is a 40, can you use ND40, or would I be better off using an oil labeled as an ISO rated compressor oil? Is there really much of a difference? The only experience I have with compressors is one oil change on the shop's compressor, and at that time I used ISO compressor oil.

 

[dave123]

I would stay with a ISO 100 alot of mfg will say ISO 100 30/40
Royal purple Synfilm is what i have in the sump listed ISO 100 vis specs are way closer to a 30 and not a 40

 

[Red91]

I'll probably just use the ISO oil. I think we even have some on the shelf.