Re: heat/air condition temp
R12a refrigerant works well. Compatible with both R12 ans 134, although there is a caveat to drain the old stuff prior to use.. It's available under various brand names.
A word of caution. The leak stop product will destroy a service tech's equipment if it's in the system when evacuated.
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Peter
ART Cryogenic/Slotted Rotors, Stainless Steel Brake Lines, PWR Radiator, Tranny cooler, Stebro, Earthworm's Poly Differential/front & rear swaybar bushings, Koni Inserts and Mychailo SVX Sport Springs all 4 corners, Indigo Blue paint. Liquid Silver Wheels.
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