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The Nissan Frontier factory service manual page HA-60 to HA-62 has the corrective action as "check lubricant for contamination". So how do you do this i dont see the "how to"  it in the manual. The oil is in with the freon do you bleed some out? what should it look like? My oil is kind of a off yellow color but I cant tell much more than that.

any ideas on this?

and how do you know how much oil should be in there? I have changed the hoses 4 times and the dealer 2. So some oil had to be lost in the hose and from the leaks on the crimp fittings. This is how i knew the hose was bad as it had a little oil around the crimp fitting(s).

thanks....

green