Sam place you check it.
dipstick tube
where do you add manuel transmission fluid on a 1991 geo storm 5 speed
Take the dipstick out and put a funnel in, add the transmission fluid. (yes, the fill and check are the same). Wait for it to go down for a while before you check it again.
You dont add transmission fluid to a 5 speed, you use geer oil.
through the side plug of the transmission
Assuming this is an automatic transmission, you can add ATF through the transmission dipstick tube. The dipstick itself will tell you what type of fluid to add.
is it an automatic, or manual shift?
Transmission fluid is added into the same spot that the dipstick is in.
Should be a plug at the side of the transmission - fill to this level
Add 1/2 quart at a time, until full.
All Aerostars have a small tube located above the center of the engine that the transmission dipstick is inserted in. Use a small funnel preferably with a flexible tube inserted into that tube to add fluid.
You add the transmission fluid to where you check the level (I think it's on the passenger side when you look under the hood). remove the dip stick and add fluid with a narrow funnel. Check level when engine is running.