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A/C Pro High Mileage is a 10.8 oz can of R-134a refrigerant blended with leak sealant, UV dye and anti-wear additives, aimed at vehicles past 75,000 miles. The sealant targets rubber hoses, gaskets and O-rings, the dye glows under UV light to trace leaks, and the additives are meant to extend the life of an aging compressor and system. It is a top-up product, not a repair: it will not fix a failed compressor or a large leak, and it is restricted from sale in WA, VT and CA. Against plain R-134a cans it adds leak-stop and diagnostic dye; against professional service it is far cheaper and DIY but cannot evacuate or recharge a system by weight.
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Lowest price we've seen: $30.97 on Nov 14 at Walmart. Tracked across 2 stores since Nov 14.
Rated 4.5 out of 5 from 195 ratings. Buyers mostly report colder air after a top-up and like the built-in leak sealant and dye for older cars. Complaints center on leaks that return and on sealant concerns.
A/C Pro High Mileage is an R-134a refrigerant refill for recharging a vehicle's air conditioning system. It is formulated for high mileage vehicles, meaning cars with over 75,000 miles.
The formula contains A/C leak sealant that addresses leaks in rubber hoses, gaskets and O-rings. It also includes UV dye that glows under a UV light, which helps locate the source of refrigerant leaks. Anti-wear additives help extend the life of an old or high-use A/C system.
To recharge, find the low pressure port, measure the pressure and charge the system.
