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We’ve just purchased a freeze dryer from Harvest Right, and we’re excited to start freeze drying food.

Most people don’t realize that the freeze drying units are more like power tools than a kitchen appliance, mainly because the vacuum pump requires frequent oil maintenance.

Harvest Right recommends that before each new batch you drain a tablespoon of oil, and add a new tablespoon. Then after 3 weeks of constant use you completely change the oil.

The prices for oil range from $10 – $30 a gallon on Amazon, but don’t skimp and get the cheap stuff. If you want great performance you’ll need to use high quality oil.