Ben, I have recently got the oil pressure buzzer. I'm thinking along the line of the pressure relief valve sticking when some conditions are right. My conditions seem to be, high rpm then lower as I crest the hill, hot oil temps as in a longer than three or four minute climb, and heavily loaded. Some observations that may or may not be relevant. My breather hose is collapsed somewhat. My van has also made a sudden valve noise, as if several lifters momentarily collapse. The oil is 10-40 mobil synthetic. Sincerely, Mark Keller 91 Carat |
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