I recently brought my MJD from First service and in which one of the action item was "Correcting torque of drain plug and leak arrested'. Now on a cold engine when i look up the dip stick the level is lesser than the MAX level, slightly lesser than it used to be after delivery. Could the reduce in level be attributed to the leak from the drain valve which tightened in wrong torque setting? Can I insist the TASS for a free topup up to the max level once again. pl advice.