View Full Version : Types R22 referigerant oil

Jun 19, 2010, 09:30 AM
How many grades of R22 refigerant oil are available.

Jun 19, 2010, 10:37 AM
Up to 6 depending upon where in the world you live and what temperature the system is running but the main R-22 lubricant is a mineral based oil and some of the newer synthetic styles are also compatible for lower evaporator temperature usage if care is taken since the newer synthetic oils can cause a problem with oil return from the evaporator..

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