No, they do not release friction they reduce it. Some friction will always remain in the common modern internal combustion automotive engine. Engine oil additives actually reduce the amount of friction that can be very intense and harmful to a engine, especially when starting from cold. Chemical polymers and agents that make up the engine oil additives are designed and engineered to add a level of extra protection to the standard engine oil. However, a good name brand engine oil, installed into your vehicle with proper weight and viscosity and proper oil manufacturer recommended additives -which are already in motor oil from the manufacturer - is all that is needed. No other additives should be used unless the automobile manufacturer has suggested it's use.
Interesting - static friction is greater than moving friction; but if the car is not in a skid, then the part of the tires in contact with the road is not moving ... thus static friction holds in both cases.
There are many fuel additives that you can use that will help your car burn less oil. Using high grade additives can help treat friction in your engine at the the actual source.
You can always try fuel additives to clean out the gunk in your car's engine.
all off it of course
to reduce friction
For the most part yes, but the car depending on the aerodynamics of the design can resist most of it.
the front boot of the car increases the friction on the car
One of the ways to reduce friction in a car engine is to add an oil lubricant. The oil lubricant can be mineral or synthetic but they help the engine parts to move without too much ware. Another way would be to add an engine oil cooler.
Friction is what makes the brakes stop the car.
Friction does work to slow down the car. Thus, the more friction there is, the less distance a car can go.
If additives are so great why doesn't the vehicle's manufacturer add them from the start?
Friction is de opposition of motion. if a car is in motion, the friction is said to be reduced because it oppose de movement of the car.