Quote:
Originally posted by Vince M
While people might be using Duracool and HotShot and other trade names..the only one approved for automotive use is r134a. Many of the these contain propane which is flammable and therefore not recommended for automotive use. r134a is the only gas being used by all car manufacturers.
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from the DURACOOL website...
"I have been led to believe that R134A; the refrigerant that has been use widely in new car production since 1994 in the USA is NON-FLAMMABLE?
This is FALSE! The auto ignition rating for R134A is 1328 (F) degrees. DURACOOL 12a has a higher auto ignition rating of 1635 (F) degrees. All refrigerants should be considered flammable when mixed with oil or lubricant which is necessary in any installation.
The chemical companies touted this when they introduced HFC-R134A on the general public in the early 1990's but this is not true. The MSDS information for HFC-R134A is available within this site. You can form you own conclusions as to why HFC-R134A was ever approved for mass automobile production in the USA.
R134A is combustible also. This means that under certain conditions it can have a violent reaction (ignite or explode) without an external ingition source. This is also posted in the HFC-R134A MSDS.
To also help with your comparison of automotive products that you use. Most motor oil has a flashpoint of the general temperature range of 400 (F) degrees."