Quote Originally Posted by Jon Wehrenberg View Post
I have always been reluctant to pressure wash. It is very fast and very effective, but it is like using a sledge hammer to drive in finishing nails.

With the electronics our engines have there are a lot of connections, openings for wires which go internally into the engine, and the electronic devices themselves. All of these plus a lot of other areas may be adversely affected by the high pressure spray. I would not hesitate to pressure wash the oil pan, the lower part of the transmission, and the area around the engine, but that is where I would draw the line.

I have used somewhat mild degreasers such as Simple Green and a light spray from a garden hose. I have used Gunk applied with a compressed air siphon hose and worked it into the grease with a brush, sometimes having to repeat the process several times, and then rinsing with a hose. I always dry the engine when I am finished.

Having said that I have seen Prevost use a steam Jenny on and around the engine so maybe I am being overly cautious. I have however had corrosion in one of the computer electrical connectors on our previous coach and I can tell you the problems that result from that can be extensive. Those problems were the result of water spraying from the wheels, but any application of water around electrical connections can produce the same results.
Good morning Jon,

I tend to agree with you, more of a surgical approach to the cleaning process.

I will use this theory when cleaning.

Have you ever used a product called Bo-Shield on electrical connections. We use this on our boats, spray down everything with this, it really helps in a wet saltwater environment. Could I spray electrical connections on the bus this way???