" regular " unleaded , 87 octane
Group 24R is the largest you can easily fit.
The Vehicle Speed Sensor on the 1996 Mercury Villager is located on the back of the transmission (as you look at the vehicle from the front) on top of the transmission with a pair of wires leading away from it... best to reach it from under the vehicle.
This can be a tricky process. Unless you have some experience with vehicles, it might be best to leave to the professionals.
According to the 2000 Mercury Mystique Owner Guide ( 5W-30 )
This is an extremely comlplex process best left to someone with experience. It will take a good mechanic most of a day to do this.
" regular " unleaded , 87 octane according to the Owner Guide
i say 7th grade is the best. but grading A is the best.
Most likely, the bushings on the shift lever have become worn and need to be replaced. If your Villager is equipped with air bags, this job is best left to a professional. There are components which must be removed in the steering wheel which could (if not properly disabled) deploy the air bag and do serious injury.
5w30 is recommended from Ford. Wouldn't hurt to stay with a name brand oil.
I prefer to use Duracell batteries . . . they keep going, and going, and going . . . = = Answer = = Any good national brand battery with at least 850 CCA (cold cranking amps) Then have your charging system checked.
Saturn's run just fine on regular fuel; in fact, all fuel should be as "fresh' as possible to minimize potential problems. The best grade for your Saturn will be partially determined by your altitude. If you live at a higher altitude, you can get by with lower octane.
The best method to purify mercury is distillation.