Since that family of engines is pressure lubrication, I would see what the oil pressure is using a hand held mechanical gauge. The oil pressure port is on the right (as you are sitting on it) side front of the block. Cold PSI should be 50-60 psi. Hot at 3650 RPM 40-45 PSI using 30 Weight oil
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582, 682, 782, 782D, 1282, 1050, 1210 x 2, 1711, and 1811
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