Originally Posted By: gonzo
about half a quart every 300 miles.It has 95,000 miles on it.I'm using QState 5-30 conventional.I replaced pcv valve about 1500 miles ago.Luberfiner(autozone) pcv valve
That is a lot of oil. I mentioned PCV valve because an aftermarket pcv valve can cause increased oil usage. Do as StevieC said, and see what happens. You can give A-Rx a try, or switch to a HM oil and see what happens. If you decide to use A-Rx don't use it with a synthetic or HM oil.
I would try the PCV valve first, then track oil use. If that doesn't work try some of the other suggestions. It would be nice to know what solved the problem if/when you solve it.