Oil pressure is low
I've got a rebuilt 400 in my bird with about 40,000 miles on it, and when I start it the oil pressure is good (~40 at idle, 60 at cruise). As the engine warms up (15 minutes or so) the oil pressure takes a dive, and winds up at 7 at idle and under 30 at cruise.
I'm running a pretty thick oil, 15w-40 with a quart of lucas stabilizer. This problem came on pretty suddenly. A few hundred miles ago it happened, and a bottle of seafoam and a quart of transmission fluid seemed to fix it, but now it's back.
Does anyone think that there is any possibility that I don't have to overhaul this motor?
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69 firebird
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