What could be causing this? I don't think it's loading 10 qts of oil in the top. Let off the gas and pres. returns to 70 in the time it takes the motor to idle down. Has this happened to anyone? and how did you fix it? New 496 With HV pump, mech oil pres guage on motor, electric guage in dash, so I know its not the guage.
Thanks in advance