Posted by Jerry/MT on February 11, 2013 at 16:45:35 from (206.183.116.145):
In Reply to: oil pressure- to-20 posted by purecty on February 11, 2013 at 02:18:19:
Your oil pressure relief valve either has too strong a spring or the valve is stuck shut. Normal oil pressure is 25-30 psi and min is 15 psi with the engine at operating temperature idling at 400 rpm. The drop you see are the clearnace opening up due to temperature, with no pressure relief from the oil pressure relief valve.
Check the relief valve or you are likely to to start the rear main leaking into the bell housing.
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