No, it is not required. I do however recommend a high mileage formula conventional oil or you can if you wish use synthetic.
You can find oil for high milage vehicles at auto parts retailers.The oil is specifically formulated for high milage vehicles and will help with oil consumption,so they say
Mobile One Synthetic for High Milage engines
the only dis advantage is it gets it effect in vehicles after 1000km running.after 1000km the milage will be more
Most Dodge/Chrysler vehicles with digital odometers store the milage in the engine control computer.
Some cars as well as aircrafts use synthetic oil. Whether you should use it in your car or not will depend on the age of the car as well as its milage. If its too old, its probably not a good idea.
Piston for sure gets better milage unless you have a V8 or higher. Rotary drinks its gas.
no the higher milage or higher rpms can cause the head bolts to stretch which would cause it to blow
High milage motor oil has extra additives which help prevent oil leaks.
manufacturer recommends 5w30.....I usually use 10w30 in older high milage vehicles. It also depends on your location (climate)
Air filters do not determine fuel efficiency in vehicles. They help to insure that debris is not taken in to the engine, but do not effect fuel intake.
Diesel Engine. Due to high caloric value it gives more high milage but it creates pollutions due to incomplete burningg of some gases.
its a gimmik it comes on in milage intervals and all we do is push a button to shut it off