Re: oil consumption
If your intake manifold gasket has just created a small leak (between the lifter valley and one of your intake ports, the oil consumption will be up and the motor will appear to be running normal and clean. I have a buddy that has been fighting this on his Corvette motor for a couple of years, since his last rebuild and we just found that the gasket had not sealed in one place. He would use a quart every 500 miles.
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