manual transmission gear oil DIY service and fluid wwwrbodiesel›TDI Wiki, DIY, and FAQmanual transmission gear oil DIY service and fluid replacement-mk4 VW-Audi DIY drain and refill manual transmission gear oil for Jetta, New beetle, Golf (4th generation cars and similar Audi) This article shows how to change your manual transmission gear oil on VW TDI Jetta. VW golf: the transmission fluidal - ASAP How do I refill the transmission fluid in my VW golf 2002 model (manual transmission) and know that it is topped up sufficiently. I emptied the fluid by mistake thinking it was the oil pan release. Do you know if i need syn oil or normal oil. thanks.