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Ford Repair/1989 Taurus r-12 vs r-134a
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Question
If the system is evacuated but no other changes made, can you replace r-12 with r-134a in a 1989 Ford Taurus?
No. There will always be oil in the system, and as much of the oil as possible should be removed. Usually replacing the accumulator will get rid of most of it, as well as flushing the system and for best performance changing the oil in the compressor. You can replace r-12 with r-134, but most likely this will just cause other problems later.
The r-12 mineral oil is not compatible with r-134.
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Dennis W
Expertise
I am a retired Ford master tech specializing in electrical, climate control, emissions, driveability, chassis, brakes, and any light repairs. Currently employed by an independent shop that appreciates my knowledge and abilities. Cannot answer transmission or parts questions, these are not areas of my expertise.
Experience
37 years of auto repair, diagnosis, and emissions testing, in service staions, independent garages, and 20 years with Ford dealers.
Organizations
National Street Rod Association (NSRA)
International Automotive Technicians Network (IATN)
IAMAW (retired)
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Education/Credentials
Riverside City College Automotive technology program
Ford Master Tech Certified Engine and Chassis Master (Over 500 hours)
ASE Certified in 7 categories
6 years training in Union 76 Pro-tech program
Awards and Honors
4-time Technician of the Year at Almaden Lincoln Mercury
Ford Master Tech
Union 76 Pro-tech Master tech
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