Unless there is some other indication that something is wrong, I wouldn't worry about it too much. An older block and '95+/- head is bound to have a bit of oil burn. If it's not really fouling the plugs up, I probally wouldn't worry about the burn pattern. But someone with more engine experience have a better idea. Good luck w/ smog. I wish they DID have it here - people drive around burning quarts of oil. Bites to be on the same road with top/doors off.