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No, you are misinterpreting what is being said: Used refrigerant oil will run in the MF engine, just like any other light oil. We can infer from the papers that FFH has found, that EPA thinks any amount of refrigerant above 0.4% in WRO is hazardous, and we can further infer that they think...

The problem with GL and SF97's is GL owns your vehicle prior to auction, and they have to apply to the government for the SF97. The government will only issue SF97's to the entity that purchased the truck from the government. That means that the SF97 will be assigned to GL! Ok, why does that...

Phosgene has no smell that you would be able to distinguish above the normal diesel smells. We know that the base oil would be fine as a fuel. My worry is what the freon becomes during combustion, and whether it can survive the MF's combustion temperatures. If you never were in a position to...

Sorry, I thought chemistry was a required class in high school... it is these days. Basically refrigerant is a molecule, which is made up of atoms. The atoms in R12 are Carbon, Florine, and Chlorine. They are arranged in the general shape of the stick figure I posted. When you burn...

Yeah, actually. The turbo is hanging off of the engine a fair distance, and the engine block is massive and vibrates quite a bit. -Chuck

Ether starting is a problem if you use too much ether, or you use ether at too high of a temperature. The ether injection attachment for the MF engine in the deuce is designed to give you a fixed size charge, and to prevent you from using ether if the temperature is too high (above 35F). I...

The problem with copper is it work hardens from the vibration, and will eventually crack. So instead, bend one up out of steel brake/fuel line, which is just what the original happens to be. In this particular case, however, I would just take some Permatex 300 (aka black goop), and paint the...

That is correct. R12 is built like this: Cl | F-C-F | Cl R22 is built like this: Cl | F-C-F | H R134a is built like this: F H | | F-C-C-H | | F F and Phosgene is: Cl \ C=O / Cl R22 lacks the necessary pair of Chlorine atoms (Cl) bonded to the Carbon (C) atom to...

Hi Josh, Truth is I feel great, and I'd like to keep it that way! The mixture you are burning is diluted 10:1. That would allow the refrigerant oil to contain 10 times the EPA maximum for burning, and still keep your mix below the standard. In other words, if your oil had less than 4% freon...

This paper is more concerned with a mechanical difficulty posed by the refrigerant oil's absorption of the refrigerant. In order to gain the refrigeration effect, the refrigerant is compressed to a point of liquification, is cooled to room temperature, and is then allowed to expand quickly by...

The EPA seems quite sure there will be more than 4000ppm of freon in used, unprocessed, refrigerant oil. That is the same as saying the oil will have greater than 0.4% freon in it. I am certain that it won't matter how long you leave it in the bucket. If you don't heat it up, and draw it down...

Thank you for the link to that PDF. If you read it, you will find that it says that your friend, with his over 10 years of specialized training and real world experience, is wrong. According to the PDF you referenced, refrigerant oil that has been removed from refrigeration units, and hasn't...

Given that refrigerant oil with freon dissolved looks just like refrigerant oil without freon dissolved, how did he arrive at his conclusion? Did he do any testing, read some research, or is this just his opinion? I can't, and won't, say he is right, or wrong. I just don't know. I do know...

I know it will degas to a certain degree. However, a long, long time ago, I had a large quantity of hydraulic oil that had been thoroughly mixed with water. It was a very nice mayonnaise color. It had no rust, so I wanted to see if I could remove the water. I put some of the oil in a thick...

Refrigeration oils are by need highly soluble in the refrigerant. That solubility is how the oil is cooled, and how the stray oil is prevented from clogging up the system. The refrigeration oil will retain a certain amount of the freon even at normal atmospheric pressure and temperature. It...

One thing that compression fittings absolutely rely upon is the tubing being perfectly smooth. If there are any lines scribed into the sidewall of the tubing (from the manufacturer's drawing die), the fitting won't seal no matter how tight you make it. Also, if you over tighten, you can make...

Nope! The MF engine is NOT a spark ignition gasoline engine... Nor is it a conventional diesel engine. The special juju of the MF engine is a deep well combustion chamber bored into the top of the piston ( It looks like what you would get if the piston was made of modeling clay, and you stuck...

Usually, when the FDC is bypassed, the fuel (smoke) screw is turned down a couple of turns, and the drop screw is turned up a couple of turns. This optimizes the mixture for diesel fuel, and makes it rather wrong for gasoline. Properly adjusted, you shouldn't notice any significant difference...

The NAPA price is indeed high, but compared having to use DOT3 in an emergency, and then having to tear the entire system down and clean out the unwanted DOT3 later, I'll pay the extra cost for the NAPA... in a pinch. ...though I much prefer to buy it ahead from just about any of the surplus...

SAE 50 motor oil is the right thing to use, but not because SAE 90 Gear oil is too heavy. There are two overlapping SAE scales: SAE Motor oil, and SAE Gear oil. SAE90 is about the same viscosity as SAE 50 Motor oil (Viscosity (100F/210F): SAE50 = 270/19.5 cST, SAE90 = 285/20.5 cST)...