For years I've been using a 50/50 mix of 'Simple Green' sprayed (pump up
hand sprayer) on a *slightly* warm engine.  Let it set for 20-30 minutes,
spray on some more to re wet & wash off with just a garden hose
sprayer.  Works great on 'normal' underhood grunge, but you're gonna have
to scrape off heavy grease or baked on deposits first.

Austin

>I live and work in a rural area and am frequently drivind unpaved roads- any
>recommendation on what to clean motor with? I'm not sure about that engine
>cleaner at the local car wash- anyone use this stuff?
>
>Have a Grateful Day,
>
>Michael  89 Westy-Rosebud