My BMW X5 had not been running properly for some time. I can only describe it as lumpy and mileage was lousy. I used ic12 injector cleaner in the injectors and it now runs smoothly and drinks much less gas.
I will now be using this every time I have the gas side of things serviced.
I applied ic12 to the injector rail as per the simple instructions on the website and what a difference. Its like a different car. I only wish I had done this sooner.