Home / Oil-less vs oil-lubricated
Pick the contamination you are willing to explain.
An oil-lubricated compressor can move gas. It also puts oil where the GIS specification did not invite it. Filtration can reduce that oil. It cannot promise the lab report the owner wants to sign.
GNR’s published compressor line is oil-less: sealed gas path, air-cooled, piston architecture. That is the reason the recovery site calls itself oil-less in the title.
