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0 pointsMikeb8512y ago0 comments

Obviously if an investor was that bad, they shouldn't be an investor.

Running a diesel engine off waste oil is a great idea, more people should be doing it.

And no, food businesses don't scale well, but that's ok, because if you're efficient, and your food is good, you can make a decent living for your whole life.

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pyre12y ago

  > Running a diesel engine off waste oil is
  > a great idea

Once enough people are doing it, it will be classified as a fuel and politicians will be tripping over themselves to regulate and tax it. Also, at some point there won't be enough waste grease to fuel the market, and the prices of unused vegetable oil will go up possibly limiting its use for food.

samatman12y ago

I've seen about six people go through this journey. Burning waste veggie oil, or even biodiesel, is considerably more annoying and labor intensive than merely filling a car. Unless this changes, it's unlikely to scale in the way you indicate.

The real threat is actually blends that use a small amount of biodiesel mixed with rock diesel. These can be burned in any engine, and there is so little food oil (animal and vegetable) compared to the demand for liquid fuel, that this practice can easily lead to the kind of effects you describe.

vecinu12y ago

To add to this, has anyone actually tested the diesel engine to make sure it meet all emission standards?

How safe are the fumes to be burned around cities? Remember when we found out lead in gas was unsafe to be inhaled from exhaust pipes?

dubfan12y ago

From Wikipedia: "Biodiesel is the only alternative fuel to have successfully completed the Health Effects Testing requirements (Tier I and Tier II) of the Clean Air Act (1990)." https://en.wikipedia.org/wiki/Environmental_impact_of_biodie...

Either way the tetraethyl lead situation was completely different. It was very clear early on that the stuff was extremely toxic. Lead was already known to be toxic, and workers at the refineries were dying left and right due to exposure.

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lostlogin12y ago

I have no idea - but my anecdata point relates to a school friend who converted a van. It smelt like a fish and chip shop from a fair distance. It ran great until the home-brew water injection failed. It was parked on a slope and the water filled the cylinders. Turning it on was a rather violent attempt at compressing water.

parfe12y ago

Unfun fact, the person who invented tetraethyl lead gasoline additive also invented chlorofluorocarbons.

https://en.wikipedia.org/wiki/Thomas_Midgley,_Jr.

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scotty7912y ago

In Poland it's already taxed. If you burn oil in your engine that was not intended for that purpose (and not taxed for that purpose) you should go to your tax office and pay the missing tax. Of course this is met with silent "piss off" from all the people who are doing it.

bandy12y ago

Not to mention the simple fact that it's hardly a waste product in most places as-is.

ufmace12y ago

Running a diesel engine off of waste oil works great, as long as there's enough waste oil. They usually seem to be talking about restaurant frying oil. A medium-size city generates enough waste frying oil for, what, a couple of dozen people to fuel their vehicles? Maybe a few hundred? That's nice for them, but what will the other 99% of the city use? Try to scale it up to fuel their vehicles too, and it'll rapidly get much more expensive and much worse for the environment than ordinary gasoline and diesel.

sliverstorm12y ago

Running a diesel engine off waste oil is a great idea, more people should be doing it.

I'm not really a fan of running diesel cars off waste oil.

To be clear, when I say "not really a fan" I mean I hate with a passion. In my experience, driving behind a vehicle running on waste oil is an absolutely foul experience. It doesn't just smell like fetid garbage, it tastes like it too.

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pyre12y ago

  > Running a diesel engine off waste oil is
  > a great idea

samatman12y ago

vecinu12y ago

To add to this, has anyone actually tested the diesel engine to make sure it meet all emission standards?

How safe are the fumes to be burned around cities? Remember when we found out lead in gas was unsafe to be inhaled from exhaust pipes?

dubfan12y ago

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lostlogin12y ago

parfe12y ago

Unfun fact, the person who invented tetraethyl lead gasoline additive also invented chlorofluorocarbons.

https://en.wikipedia.org/wiki/Thomas_Midgley,_Jr.

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scotty7912y ago

bandy12y ago

Not to mention the simple fact that it's hardly a waste product in most places as-is.

ufmace12y ago

sliverstorm12y ago

Running a diesel engine off waste oil is a great idea, more people should be doing it.

I'm not really a fan of running diesel cars off waste oil.

j / k navigate · click thread line to collapse