Err... As already pointed out, It was Waldo who did the beating. Styles was trapped in the cockpit.

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

Personally, I'd like to see any ODS removed from use, if it is, in fact, an ODS. From what I have read, 134, propane, and several others are not ODS's... Maybe I need more research.

I don't understand why continue to promote the use of a substance that is classified as harmful to the atmosphere, and WILL be released. Of course, this argument pales when compared to the sheer amount of C dumped from all IC engines...

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

What is the highest Miles Per Hour you have had your house up to ?

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/diesel-discussion/10414-help-i-need-check-stretch.html

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

Compare the volume of a potential leak's accumulation. Velocity becomes less of an issue, C'Nest Pas?

What happens if you shoot a propane tank with a high-calbre firearm? Above the liquid line? Below the liquid line?

Ignoring the flammability issue for a moment, what is the real reason for not using it, or any blend? Efficiency? Cost? Environment? Or some arbitrary law, allegedly on the books to "protect" us (taking the personal choice out of the equation). I believe in wearing seat-belts and that they can save lives in the event of a moderate collision. Does that mean I agree with a law requiring me to do so? No! Requiring me to require it for those who cannot choose for themselves? Perhaps (kids)...

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

I only shoot propane tanks with low caliber guns... so I do not know...

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html

1. Nothing.
2. Nothing.
See: Mythbusters.

__________________
RIP:
2011 E350 BlueTEC, Schwartz 81k (totaled by uninsured drunk driver)
1964 Unimog 404.1 (wrongfully towed by the city)
1994 E320, Brilliantsilber 208k (transmission shuffled off after sudden catastrophic fluid loss)
1982 300D, Silberblau under a blue repaint 256k (sold for parts)
1995 E320 Polarweiss, 131k (sold for parts)
1995 E300D Polarweiss, 287k (totaled by drunk driver)

Propane in houses (and boats) is extremely dangerous. It is heavier than air, will sink to the floor and won't dissipate. If you have a propane cookstove or furnace, you should have a drain in the floor so any propane which escapes can flow out of the house. Since in houses, the source of propane is typically a very large tank, it seems far more dangerous to me than propane in a car's AC system which is a limited amount of flammable gas.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Cheap and readily available. I remember reading years ago that small fishing boats in the Arabian gulf use propane as the refrigerant in their systems for keeping fish cold.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Actually, it leaks in both cases, if the calibre is high enough to penetrate the tank. The vapors; however, if allowed to accumulate, can be very explosive. In this instance discussed , the volume will likely be many times higher than the small volume in a closed A/C system. But I digress...

This has been fun

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

__________________
RM Smith
1988 560SL

"Where is it again that we are going, and why are we in this handbasket"?

Propane could be corrosive or may eat rubber seals as well

Just something else to think about.

I have heard that some OLD refrigeration units used ammonia Plus they were insulated with cork sprayed with formaldehyde

__________________
My occupational hazard bein'
my occupation's just not around...
1980 300SD
1980 300SD

Gosh!!!

Look at what I started! I was just thinking that I don't know which oils are in the system. I have read where freeze12 and propane will work with either oils
Also I have talked to some locals and they say it do not make any difference which one to use, 134 or 12. they will work when mixed. However my 300sd has the 134 fitting installed on the low side. The ac worked good before I quit driving it and it sat for 2 yrs. So I am going to shoot the 134 to it and see what happens

Thanks and no thanks to all the bs and infighting guys.

End of this thread, I hope!

Tom

Cost (less), Cooling (better), Pressures (less then R12 if you go 60/40 with propane / isobutane AKA R600), compatibility with mineral oil, less affect on the environment (no ozone or greenhouse affects).



-J

__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Using the same logic to condenm propane I can conceive an instance where it would actually be SAFER than R12 in a collision scenario. Car A slams into the rear of Car B. Car B's fuel tank is compromised and ignited. Car A's condensor is compromised and begins to evacuate.

If Car A has R12 the flames from the fuel tank fire will burn the R12 and release mustard gas potentially posioning / killing people in the vicinity. If Car A has R290, the charge will burn with the tank's fuel releasing water vapor and CO2. Point goes to Propane.

I think the problem with this discussion is that people associate relative risk with no risk. Take the argument being made you don't want flamable materials flowing though the dash. R134A is flammable with a surprisingly low flash point when pressurized but nobody is afraid of R134A. I think they should be, flammability issues aside, it's a known carcinigen associated with testicular cancer. Now that is something I wouldn't want flowing though my dash. R12 destroys ozone and decomposes into mustard gas. Again risk is present. They weren't the approved refrigerants b/c they are what's safest and best performing, they are the only approved refrigerants b/c Dupont has the market cornered and enough politicians pockets to keep better performing 1$/pound refrigerants off the market.

__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

As the OP, you can lock the thread.

I think your approach is perfectly reasonable for your car. You may consider having someone evacuate the system prior to filling, or not, your call.