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It would be better if you bought a 134a refill kit which has a gauge. This is important because you would be avoiding overfilling the system and damaging the compressor/ other componets. There likely is already some gas in your system, and in the long run you'd probably save yourself some money. The "bicycle type" gauges work, but only as a very rough estimate- a gauge is the best.

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19y ago

What else can I help you with?