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Old 02-24-2021, 04:11 PM   #7
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Originally Posted by cadillacdude1975 View Post
You can buy a small can at walmart. You add it to the system after it has been evacuated. Pull the vacuum first. I always start the engine, set the AC on high, add one can of freon first, then the can of oil, then top the system off with the correct amount of refrigerant. If you try to add it directly to the drier, it will be evacuated out when you pull a vacuum on the system.
Dummy question here.

I know what freon is (or R-134A), but what is a "can of oil"?

What kind of oil are we talking here?

Could someone post a URL to some such oil on Amazon?

I really don't know much other than theory about the A/C system.
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