I personally wouldn't use break claen on my rc's. On all of the cans it says "safe on most plastics", so it could make the plastic brittle which is more likely to break. If your just using the break clean for cleaning around the motor then go for it, but if you want to clean your whole car, then use WD-40 and an air compressor. This will make you car shine like it was brand new. It also lubes your hinge pins, protects against rust and will help keep dirt off your car.