there is a process of changing the original vent to a 90 degree vent,connecting and looping a hose up above master cylinder and back down approx halfway securing the hose on both sides away from any hot parts.this problem has been referred to as morning sickness,the vent gets plugged and fluid purges usually after the vehicle has been parked overnight the fluid comes out of the dipstick tube "nice design"
According to the 1998 Mercury Sable Owner Guide : ( Motorcraft MERCON-V automatic transmission fluid )
On a 1996 Mercury Sable : The automatic transaxle ( transmission ) fluid level dipstick is near the firewall and the brake fluid reservoir ( looking from the FRONT of the vehicle it is to the left of the reservoir )
Down the same tube that holds trans dipstick. Use a trans funnel, long, flexible and correct size.
transmission fluid is uaually added through the trans dipstick tube.
the trans fluid on a auto trans goes through a tube in the radiator to cool the fluid if the tube has holes in it, it will leak trans fluid in to radiator. you need to replace radiator or have rebuilt.or you could put on a aux trans cooler and put plugs where the trans lines used to go.
You have to fill the trans fluid through the dipstick tube.
Its on top of the trans as you're looking down. Its not internal. I've replaced mine on my 1997 Sable.
Transmission slips in and out of gear on and off acceleration, the trans. fluid is burnt, the fluid level is low and the unit has tranny fluid leaks.The vacuumn modulator valve needs replacement if its pulling trans fluid through it and into the intake/exhaust manifold and causing slippage in the trans.
Put trans. fluid in through the dipstick hole, be careful not to overfill
Automatic, the fluid can be added through the transmission dipstick tube. Standard, fluid has to be pumped in through a fill plug on the side of the trans.
Through the dip stick tube.
You add automatic trans fluid through the dip stick that you use to check fluid level