This was a slow week for the freeze driers again. We just fired one of them up on Wednesday to run a batch of basil. Today we are finishing up a batch of tomato sauce. However, I’d like to ask SurvivalBlog readers a question.
We currently filter our oil after every run through a simple oil filtering setup made out of plastic jars and an automotive oil filter. The issue with the current design is water in the oil. If you allow water to enter the oil filter, it will not exit until the filter is full of water. At that point, you have to either change the filter or tear the setup apart and drain the water out of the filter. I’ve seen two ways to get the water out.
- Use a capture jar with a shoulder on it when you drain the oil from the pump. Then let it sit for about an hour and the water will settle to the bottom. You can then carefully pour the oil into the filter, leaving the water in the shoulder of the jar as you pour. Because of the design of Mason jars, you can’t get a perfect pour and avoiding all water means you will lose about 1/4″ of oil. We currently get around that by not dumping that water/oil until the jar has been used for many oil changes and the water accumulates to a larger amount.
- Freeze the jar of captured oil. The water will solidify and the oil will get slugish. You can then up-end the jar when you pour into the filter without having to worry about the water. This method certainly avoids all water, but the sluggish oil doesn’t pour very well from the jar and you end up wasting about the same amount of oil in the long run. It also takes much longer as you have to add in the freezing step.
So, how do you avoid water in your filtered oil?