Why does your 3000gt burn so much gas? I get over 25 mpg hwy with mine. 400hp at the wheels on Mustang dyno.
Haha I missed the oil part. Time for new rings. Get some WiseCo pistons with the extra valve clearance. I designed them with a WiseCo engineer several years ago when I was rebuilding my engine due to timing belt breaking. Zero clearance valves suck. New design helps elevate this issue.