Ed, You're almost completely correct. I do agree with your assessment of steam cleaning the underbody, my description was based on a "shadetree" project. However, I don't recommend steam cleaning the engine. As you know the spark plug wells are very susceptible to water pooling unless the spark plug boots are in good shape and properly installed. I have received lots of reports from owners who had their engines steam cleaned and than could not re-start their cars for days. DMC Joe / DeLorean Services / <dmcjoe@xxxx> Web Site: <http://www.deloreanservices.com>