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How much refrigerant should I put in?

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We recommend using a pressure gauge for an accurate fill. Interdynamics' color-coded gauges will indicate whether you should continue filling (charging) or not. If you have just retrofitted from an R-12 system and had all the R-12 refrigerant removed, you should fill a system with R-134a at 80-85% of the original R-12 Volume. (Consult your owners manual or sticker under the hood for original R-12 volume).

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