YES!!!!! Use only the recommended lube as described in your owner's manual. Dextron III is an A/T fluid and is not even close to 80w90 gear oil. Use gear oil and you won't be able to shift it. Why would you even want to do this? not necessarily. dextron III is for *automatic* transmissions, the user specified a *manual* transmission which uses gear oil and not dextron III ATF. They should never be mixed however, and the user should make sure that the 80-90 is recommended by the manufacturer for the specific climate the car is exposed to. Most of the newer model manual transmissions do use dextron III with mercon, I know it sounds funny to use atf in a manual but that is what these new ones use. Mine has a tag on the trans that says use only dextron iii
ep 80w gearoil put 2.6 litres in dont fill it to the filler hole,
Answer: the dip stick is a pain in the butt. the dipstick is actually can be accessed from underneath the car only. the car needs to be lifted and the safety panel needs to be removed to locate the transmission chamber. its is on the driver side following the left axle. On a standard 96 VW Jetta, there is no transmission dipstick. The owners manual may say non-serviceable or by VW dealership Service Only. on a standard there should be a checkplug ,when taking out there should be gearoil most likely 80w90 or similar up to the bottom of checkhole (use finger to check).if you need topup you need a to use a oilpump to get it in.going to your local VW shop should do the trick.