Soap and water works nice, along with not riding people's ass in the winter, I've never had any corrosion on my motors, I pressure wash them once a week in the winter and every trip to the rig from home and from the rig to home, saves a lot of headache.
Changed my first glow plug last days off at 90k and it spun right out.
Changed my first glow plug last days off at 90k and it spun right out.