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Old 11-24-2015, 09:01 AM   #55
City: Venice Louisiana
Country: United States
Join Date: Dec 2013
Posts: 1,097
Doug has it correctly, on all counts. The reference to vacuum "psi" was getting to me also but I let it pass. The reason youz guyz need vacuum gauges is because you have those junky Racor filters. Davcos are designed to show when the filter needs changed. Super simple, even a truck driver cant mess it up. And filters are WAY cheaper and more available.
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