Joew2604
Veteran Member
Still thinking of putting vacuum gauges on my two perkins 4-154 engine filters. The filters are Racor 120 series with the small R12/R13 elements. I checked on line and there are many vacuum gauges from $6 to $25. Is there any reason I shouldnt use one of these and save a lot of money. They are all about 2 1/2 inch gauges and not liquid filled. Any thoughts appreciated. Thank you