Check wheel balance first.
For a 1995 Ford Crown Victoria : ( 5W-30 engine oil )
5W-30 is the preferred oil according to the Owner Guide
Wheels are probably out of balance or you may have a bad tire.
The owners manual shows ( SAE 5 W 30 )
Tires need balancing.
i would really like to know myself
Can be a bent wheel, tire out of balance, or worn suspension parts.
You also have to consider "idle time", so an hour meter is much more important that just a mileage number. Std. is considered 30 mph. i.e. if an hour meter is reading 1,000 hours this is equated to 3,000 miles.
I ASSUME it would take 5W-30 like my 1991 Ford Mustang 5.0 liter V8 engine did from the factory
Vic Seixas was born on August 30, 1923.
Vic Seixas was born on August 30, 1923.
Vic Wilk was born on 1960-08-30.