In my experience, a quart every 500 miles is right at the borderline of
acceptability, with 1000 miles being about average and 250 miles meaning
rebuild time.  But oil is cheap, just don't forget to check it every
other fill up!

Were the heads really new or rebuilt?  How many miles on the rest of the
engine?  It could be the power boost from the head replacement is
causing worn oil control rings to pass more oil than before, or maybe
the valve guides weren't replaced if the heads were "rebuilt."  Are you
running 20w/50 oil?

--
Stuart MacMillan
Manager, Case Program
800-909-8244 ext. 8208

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