Lenny and all, You are absolutely correct about the engine flush. Another Problem was also mentioned in someone else's email. The fact that an engine Should be running while the flush process is taking place is also true. This way all the lubricated parts of the engine will be cleaned. The most important thing to remember is that you don't want to use a "solvent " based chemical for cleaning. A detergent is recommended by all manufacturers. Wynn's products are all detergent based and their flushing machines are all used while the engine is running so that all the parts are cleaned Correctly. If anyone would have any questions regarding Wynn's products and equipment, I can be contacted personally and will be more than happy to explain the entire process. To find a certified Wynn's dealer, you can call 1-800-989-8363. Thanks, Larry Meixner 300G manager for KCEE dist, Wynns professional products division [Non-text portions of this message have been removed]