What year did they switch to r134?

What year did Aerostar vans start using R134 for the ac systems?
Matt

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Matt wrote:

probably in either 94 or 95.....i got a 93 taurus and the service book mentions the R-12(the old stuff)... i got a 96 contour and its got the R-134 refrigerant...... the 95 contours have R-134,,,, so you can narrow it down......
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jim wrote:

My '94 Mark Vlll has R-134.
--
el lobo


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They switched halfway through the 1993 model year. My 93 Escort GT has R134, but there are a lot of early 93 models still using R12.
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