The pictures were taken in the early morning so the samples were “warming up” from a pretty cool night. The corn, olive, soybean, and peanut oil however were completely solid.Ī few days later after the samples had gone through several nights of sub-freezing temperatures, the thermometer read about 40° F, so we decided to see how the samples were doing. Especially the safflower oil! While it looked gelled up, in reality it moved very freely and looked more like cloudy biodiesel. They still could move around fairly freely in the jars with very little effort. The Safflower and Canola, while gelled, were still very liquid-ish. One evening the temps dropped clear down to 10° F making it an ideal time to see just how the samples were doing.Īll of the biodiesel samples had gelled up, but what was interesting to see is that some were thicker than others. Once we had the samples made, we placed them outside on a stand with a thermometer near by and started to see what happened as the temperatures started to drop. ![]() ![]() Something else that’s interesting about biodiesel is that the temperature that it gels at is highly effected from the oil that it’s made out of.Ī few years back, we made small batches of biodiesel from brand new canola, safflower, corn, soybean, olive, and peanut oil. ![]() Biodiesel is truly an awesome alternative fuel! However, when it gets cold outside, it tends to get thick and gel up which can cause issues with trying to use it in colder climates.
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