Clean fluids – pure power
Fluids are the life blood of your BMW. That is why it is so important that you follow a regular maintenance program that includes checking, and flushing/exchanging the fluids when necessary.
For example, power steering fluid that is old and dirty, can actually damage the internal drive shaft in your power steering pump. You may even notice that your E46 is getting a little bit harder to steer at low speeds. Actually, if you get used to the gradual decrease in performance of your steering, you may not notice it. Then it could fail completely resulting your needing a new power steering pump, etc.. That’s one good reason to keep it clean.
Be sure that you are using the all of the correct fluids. BMW is very specific which oils, anti freeze, power steering fluid, transmission fluids, etc., that should be used in the various year and models of your BMW or MINI. Using inferior products for your BMW? Just say NO.