09-03-13, 11:13 PM
Most engine wear is caused when the engine is started from cold and before the oil reaches its optimum viscosity. Once the engine and oil are up to temp wear is reduced, if the additive is able to adhere to the surfaces as in the case of PTFE to protect cold starting damage it will make it quieter when cold . As to weather it is an advantage in a warm engine running on quality oil is questionable . Having been in the motor trade for some 30 years, and have used most of the additives at some time with no ill effects only quieter and smoother cold running ,if you dont try it you will never know ..........