Re: 94 Explorer oil pressure gauge
I'm guessing they put in a different weight oil than what you normally ran. A 15W40 (generally for diesels due to their lower operating rpm) is sometimes substituted at shops for 5W30 or 5W20 which can affect pressure. Oil pressure should remain constant with speed and show a lower reading when at idle. If the pressure is still high after a long drive I'd take it elsewhere for an oil change (yes, bite the bullet any pay another $20), and see if that solves the problem.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!