What are some other possible causes to go through a quart of oil every 400 miles in my rebuilt 304 that only had 55000 miles on it before rebuilt and now 4300 miles on it after rebuilt. It runs incredibly well, no black smoke from the pipes, new PVC valve, carburetor has been rebuilt, oil pressure is >20 or 10/1000 RPM's, no oil leaks at the head, or under the pan. I just changed the oil to get a good level, 5 1/2 quarts to full line on my stick.... I have two oil filters and a standard size pan. So I started with a full level just to be sure.....400 mile later, it was at the add line......1 quart and it was full.
Any ideas???????? Thanks all
Any ideas???????? Thanks all