Comments by "David Elliott" (@davidelliott5843) on "Make \"Biodiesel\"? Let’s find out! Diesel vs Biodiesel, Used Motor Oil, Vegetable Oil, MPG" video.

  1. The best way to wash used cooking oil is to boil it over water. The rising steam strips the dirt. Biodiesel needs dry oil so tap the clean oil from above the water. Drain the dirty water and remove debris for composting. Similar system will wash the biodiesel but first it must be separated from the dark glycerol soap. You don’t want that in the engine. Vegetable oil burns nicely in diesel engines but must be heated to 80 degs C. About 180 degs F to avoid stock carbon deposits. Glycerol chars before it burns but preheating the oil allows a clean combustion.
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  2. Biodiesel has about 95% of the energy in Dino Diesel. However it contains oxygen so ignites more smoothly so stop start driving is cleaner and has similar miles per gallon to Dino.
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