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Re: burning oil
The Northstars have loose oil ring tolerances because they are a performance engine. The problem arises when the owners drive the cars like little old ladies and the rings get gummed up with carbon. Usually a couple of full throttle blast from 0-60 in 2nd gear will clear the problem up. The Northstar is an engine that likes to rev, and needs to to keep the rings clean. The newer engines have a redesigned oil ring that helps this problem.
But the 1 quart in 1,000 miles is perfectly normal. My 2000 STS has 20,000 miles on it's engine and it uses about that.
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