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You better careful starting a diesel on gas. You can end up with a bunch of broken pistons or piston rings. Did they fog the intake with gas or inject it directly into the cylinder?
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I see the need for some education. Keep in mind I grew up in Alaska, I have seen and operated machinery in -40 and lived and saw it run at -65.
You dilute the diesel fuel with gasoline or flamage fluid like alcohol.
They did have tractors that started on gas and when the engine was running and heated up, they had a switch system to shift to diesel. I know a guy who restores tractors and he showed me how it works. Very slick. In that case they did not mix gas and diesel.
Cat went with Pony engines.
Kerosene is a form of diesel, it was called stove oil or number 1 (vs standard Number 2). In Alaska you got really good stove oil because it was all one product sold at different prices.
We still switch to Number 1 diesel for engines in the winter time. Have not run a stove on Stove oil, may be separate now with the additives with Ultra Low Sulfur diesel.
They start diluting the diesel tanks with number 1 diesel in September so they have full change over by the time winter hits.
And yes, people get caught out with a tank top off before the switch starts.
My method was to order Number 1 Diesel for my fire pumps and generators all year around (they finally kept it in stock for people that had equipment like I did, backup power does not care about effici8enty7, it just needs to run)
In fact one set of 3 generators was fed off a Jet A tank. Not supposed to but they did and the engines were going fine last I saw.
Issue came up when ULSD came on and then they had to stop doing that as they were filling trucks that needed ULSD for the emissions. None in affect when they started t he operation. Jet A is much like Number 1.