OP fully pegs:



RPM when oil pressure fully pegs:



BTW [thread hi-jack in progress ), while out tooling around today, I did a couple of ITs (Italian Tune-ups), up to 5,000 rpm sustained for +20 seconds, but it never sooted out. Should I take it up higher or longer?

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1984 300SD 326,997 miles and counting . . . No wait, my odometer is still dead