I've been searching the VAF "database" - which is wonderful BTW - for advice on this subject of determining the causes and solutions to out of spec oil pressures. My particular problem is an EFIS/EIS reading HIGH oil pressure. While I have plenty of data to use now to diagnose and solve my potential issues, there's been one thing that has caused me pause. In several different threads there is a common comment from multiple respondents: (seemingly nonchalantly stated) "...just hook up a MECHANICAL pressure gauge..." The thought of testing the actual oil pressure being generated by using a calibrated and known to be properly functioning device had occurred to me and so I called two shops where I live and both said they did not have such a device! Did I confuse them with my request? I don't have a mechanical pressure gauge and I am not really interested in buying one at this point. Sounds to me like this should be something any shop worth their spit would have and use on a regular basis. Am I crazy?