If the oil pressure gauge of a late model engine of any kind gets low enough to show anything but full scale on a spray-oiler gauge, it's time to break out the wrenches and find out where the oil is going. John's freshly installed "low mileage" 261 was showing less than 15 PSI at cruise speed when I started watching the gauge and listening to the engine during a short road trip at a homecoming event a few years ago. That engine had two cracked pistons and a rod bearing a hair's breadth from a parts-slinging catastrophic failure!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!