i have an 89 mk3 turbo...and im not getting any oil pressure at all...and i dont wanna take the chance to drive it around...ive had it sitting down for a while....a freind told it might juss be sludge build up in the pump screen...im not sure what to do i dont really wanna take the motor out...i dont really have that much time to do all that...please help me guys i need the car running asap...thanks...