I just purchased a McGraw air compressor from Harbor Freight a couple days ago. I poured in the oil that was provided, which was nearly .... crystal clear. After only about 10 fill cycles, the oil is already a mid-gray color looking at it through the sight glass. I want to get those break-in metals out and I want to avoid the sump starting to sludge at all.
I assume I should probably run the compressor until the sump and oil are pretty hot and then pull the drain plug.
I wonder if I should fill the sump with some 20wt motor oil... heat it up again and dump it immediately.... just as another flush.
Then I am wondering what to pour in for longer term????
The compressor is in my garage and is only used occasionally.... maybe 2-3 times a month in the winters. In the summer it is used much more. It also gets cold here in the winter, easily down to the negative 10's in January and February, with the garage dropping close to freeing.
I don't mind paying a premium for great synthetic and I can easily get Royal Purple Synfilm 100. (I will not use motor oil, as I don't want the risk of additive build-up.) There seem to be other, great oil choices, but they are sold in only gallon or 5 gallon jugs/pales.
This 20wt is also available from Amsoil. Link CLICK
Any other opinions and/or suggestions?
......
I assume I should probably run the compressor until the sump and oil are pretty hot and then pull the drain plug.
I wonder if I should fill the sump with some 20wt motor oil... heat it up again and dump it immediately.... just as another flush.
Then I am wondering what to pour in for longer term????
The compressor is in my garage and is only used occasionally.... maybe 2-3 times a month in the winters. In the summer it is used much more. It also gets cold here in the winter, easily down to the negative 10's in January and February, with the garage dropping close to freeing.
I don't mind paying a premium for great synthetic and I can easily get Royal Purple Synfilm 100. (I will not use motor oil, as I don't want the risk of additive build-up.) There seem to be other, great oil choices, but they are sold in only gallon or 5 gallon jugs/pales.
This 20wt is also available from Amsoil. Link CLICK
Any other opinions and/or suggestions?
......
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