hey, how much oil do you folks burn off btween changes? i just checked my oil today, and the line was at the L mark. does that mean add a quart? i put about half a quart in, and i'l check it later. so far, i've been using dyno oil, i got 5000 miles, and on my last change (3kmiles) i was down about 1 1/2 quarts. What about the rest of you? am i burning too much?