[Dylan@Adams]

Typically most newer engine bays are fairly safe to take a very light mist with the hose, but I have heard the early 90-ish vettes don't like water too much.

First off how dirty are we talking?? Are we talking little bit of dust/dirt, little bit of grime, or full blown looks like I drove thru a swamp with the hood off?

For light dirt and grime use a very dilluted mixture of APC and water in a sprayer, this allows you to control where the cleaner goes and keep it away from sensitive components. I would even say to go so far as throwing a plastic bag over anything you think might be an issue if it were to get wet. It goes without saying start with a cool engine... don't go banzai 500 miles and immediately pop the hood and go to work.

Spray anything that needs a little help getting clean, agitate with a boars hair brush, and using another sprayer with clean water, spray it off, then dry the area (either with a towel or using compressed air. Work methodically in small sections to make sure you get everything.

Afterward a mixture of our VRT 50/50 with water in a sprayer is a great way to apply dressing to all your rubber, plastic, and other underhood trim that needs to be brought back to life. Knock down the shine with a towel.