Can someone tell me if I need to cover anything before getting the pressure washer on my engine bay? Ive read various threads & guides which say to cover 'sensetive' parts with foil or something to avoid water saturation, but Im not sure exactly what?!
Things like battery and filter 'look' sealed...but i dont want to cause more harm than good.
Have CG degreaser & brushes, but will need some sort of protectant.
Thanks in advance