http://www.motor.com/article.asp?article_ID=2229 MOTOR Magazine August 2014 As reported in the Auto Care Association’s Capital Report in mid-July, the U.S. Environmental Protection Agency has issued a proposed rule that, if finalized, would prohibit the use of R-134a as a refrigerant in new motor vehicles beginning in model year 2021. Also, beginning in 2016, the EPA is proposing to no longer permit the use of R-134a as an aerosol in consumer products, some of which are automotive products. Pointing to the high global warming potential of R-134a, the agency is seeking to list the substance as an unacceptable substitute for an ozone-depleting substance (ODS) under the Significant New Alternatives Policy (SNAP). Under SNAP, the EPA reviews alternatives to ODS to find substances that pose less overall risk to human health and the environment. For motor vehicles, the EPA is listing three alternative refrigerants that could be used for new vehicles—R-1234yf, R-744 and R-152a—all of which were determined to have a lower GWP than R-134a. The EPA is also proposing to list the following refrigerant blends as unacceptable in new vehicles beginning in model year 2017: R-426A (also known as RS-24), R-416A (HCFC Blend Beta or FRIGC FR12), R-406A, R-414A (HCFC Blend Xi or GHG-X4), R-414B (HCFC Blend Omicron), HCFC Blend Delta (Free Zone), Freeze 12, GHG-X5 and HCFC Blend Lambda (GHG-HP). The EPA’s proposal does not, however, impact refrigerants used to service vehicles currently on the road. Therefore, shops and DIYers will continue to be able to service current vehicles with R-134a.