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I find blending gasoline with waste oils has many advantages. However, when blending any solvent with waste oils there is likely to be a precipitate, so it is always wise to get good at removing the light blend that floats above from the sediments that settle to the bottom. Otherwise there should be no separation of gasoline from a WMO blend.I use gas. Haven't noticed any separation problems. I want to cut the oil's viscosity as much as possible.
Yes, alcohol in gasoline can pose a problem with a blend; however, I have found if the gasoline content is at or below 30% in a waste oil blend, then there will be no damage to the hoses or seals. I have been running these blends on the same 6.2L diesel engine for 8 years.Current gasoline that one may buy is 10% or so ethanol which eats rubber (buna) o-rings.
There is a downside such as this when using gasoline fuel of any percentage.
Good thing I'm so busy, I have a couple of drums of WMO that have been settling for about 8 months. I'll start filtering in May or June when it warms up. I've used old diesel and gas, a little fresh gas as well to thin it. Once it's run through the filters it should be decent. I'll probably mix it 50/50 with diesel so layering shouldn't be a problem.Yes, I agree, a centrifuge is essential equipment, especially when burning WMO, so that the sediments are removed efficiently. Otherwise it can literally take months of settling WMO blends to get all of the sediments out, because WMO's main problem is it is a colloid of soot and motor oil.
Soot is carbon, which is not much more dense than the motor oil, so it will stay in suspension indefinitely unless the colloid is broken by blending the WMO with a light solvent, such as gasoline, then allowed to settle for long periods of time, or centrifuged after a few weeks of settling.
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