Just because you disagree with something doesn't mean everybody else is wrong. There's more than one way to skin a cat.

Vstech and I have been posting the physics , the government rules, and the practical side of choosing refrigerants...

There are little things often left out of your arguments.... like whether they are legal in the states the people live in.

like whether they can get ANY SHOP to work on their AC system if it stops working on the road...

Whether the oil miscibility is sufficient to keep the insides lubricated if one is using and R4,

etc... if someone actually reads all the literature Vstech and I have posted there is no argument except by contrarians ( and conspiracy theorists ) that using straight R12 or R134 is still the reliable action to take.

Rules, legality. Did you know that in NYC it's a criminal offense to urinate in public and you can be thrown in jail for it? (legislation is in the works to make it a misdemeanor). Leathermang, if you were in NYC and really had to pee but could not find a rest room, what would you do? Pee in ur pants?

https://www.epa.gov/sites/production/files/2015-07/documents/mailfov_envirosafe_06112013.pdf

Enviro-Safe Refrigerant ISN'T! | eBay

Enviro-Safe Refrigerants Agrees to Halt Sales of Unapproved Flammable Hydrocarbon Refrigerants as Direct Replacements for Ozone Depleting Substances | eNews Park Forest

Lots of the things people do to their cars on this forum are illegal in one jurisdiction or another. That doesn't make them any less relevant as a technical solution to a particular problem.

If you're worried about a LB of HC refrigerant in the AC system, I hope you never find yourself near an LPG fueled MB.
http://www.markporthouse.net/merc/lpgpics/IMG_1116.JPG
:ukliam3:

Why is it YOU people promoting the off hand stuff do not include a warning in your posts ?
I would not have to post at all if you did that...
It makes it look like you want to intentionally mislead people who are not familiar with AC systems....
"""Never replaced the dryer, never had a problem. If you're pulling a deep vacuum you are by definition boiling off any residual moisture. """-- tjts1

That is a good example where ALL the standard industry and MB instructions are the opposite.... moisture inside a pool of oil ... OR .... inside the receiver dryer..which is the same situation plus a bag of silica gell... can not be dried by ' deep ' vacuum .... the physics IS NOT THERE .....
but you say this kind of stuff on a regular basis...

That's pretty cool... Is it a conversion or an official mb product?

Either way, it's likely better contained than an HC refrigerant would be in the ac system...

Its a fairly common aftermarket conversion for large displacement gasoline fueled cars in many parts of Europe. In the UK at least the running cost on LPG is cheaper than the equivalent diesel.

Heres a factory one.
http://gazeo.com/automotive/vehicles/Mercedes-W123-LPG-unfinished-business,article,8489.html

With LPG your mileage will drop.
LPG has higher Octaine than Gasoline, but less BTU`s. Diesel has higher BTU`s than Gas or LPG. = more energy per gallon.

LPG is a cleaner burning fuel than Gas or Diesel.

This is :offtopic: so now back to the original scheduled program and we can...:rockon: :boxing:

Charlie

LPG is cleanER ... but not clean....

HC refrigerants account for 8% of vehicle A/C in Australia.

Where is Robert Earl Keen, Jr. when you need him?

"The Road Goes On Forever,
(and the party never ends)"

This is how the terrorists win.

The Enviro Safe ES12a was working so well I was hoping to test it for the summer but it is not to be. While testing the pressure again with my manifold gauge set I heard a loud pop and saw oil and heard gas escaping below the alternator. When it settle a bit but still hissing, I disconnected the coupler on the high pressure port under the alt and the hissing stopped. Subsequent investigation revealed that the high pressure (red) hose on the manifold gauge set ruptured. Looks like either a belt or alt fan blade caused the rupture.

The ES 12a I had just installed was purchased approx 10 years ago. I can buy more online but with shipping, will be around $28. Not sure if I want to spend that kind of money.

I am thinking of trying Difluorethane or R152a, another Hydrocarbon refrigerant. I can buy 3 x 10 oz cans of it for $11 as Dustoff electronics cleaner at Walmart.
https://ehttps://en.m.wikipedia.org/wiki/1,1-Difluoroethanen.m.wikipedia.org/wiki/1,1-Difluoroethane

Anyone here tried it?

Not to get involved in any arguments here - hopefully, but just as an aside, I believe there are ways to dry various desiccants. This is assuming you know which type is in use. There are some heat/time requirements. Of course this is assuming you know what else is in the receiver/dryer, whether it can withstand those heats, and you have a place to do so that wouldn't be used for food preparation. This probably won't get rid of any refrigerant oil, and I have no idea what might happen to that oil at the required temperatures.

I'm certainly not suggesting this, it's just something I found out about recently that I thought was interesting.

Don't try this at home, folks.