06 Sienna Van has small leak oil from the oil pan. A local service shop wants to charge $28 for the gasket and about $250 for labor to replace the oil pan gasket. They say its because there is a frame member that must be removed before the lower oil pan is removed. Has anyone ever removed the oil pan before and is this true? Or are they just out to gouge us for more money. If this is a straight forward job, I'd just assume do it myself and save the money.