Compressor on my 1986 MM 2.0 L is an 2F401MH. Almost nothing about it on the internet. Is this the York kind that has its own internal oil supply and the refrigerant is oil free? Compressor moves freely and has suction and pressure (on the fingers).

The AC hoses seem dry no oil in sight. the 85 shop manual shows the right compressor and doesn't mention oil at all in the charging instructions. The specs for the compressor in the manual says Model 2F401MH ... "Lubrication SUNISCO 5GS 200 cc"

I'm going to convert to 134a but i'm trying to figure out what this thing is and how it's supposed to be lubricated ... if it's any good... anyone using this compressor? advise?

Pierre