Quote:
Originally Posted by AZ_1LE
It is normal for it to do this above 6k rpm. The LT4 uses a variable pressure oil pump, controlled via an electronic solenoid that changes the actual configuration of the pump so that it only produces ~40 psi of pressure while cruising on the highway for fuel economy, and ramps it up to full pressure above 6k rpm. It is not a sign of impending failure.
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Thanks. Good to know. I just wish it wasn’t ‘in the red’ when it does it!