what the best way to get oil and build up off engine?

use engine degreaser, then leave it sit and soak, then spray if off, but you better cover the dist. cap with plastic before you start.

Laundry Detergent!

Soak On A COLD Engine, Let Sit. Flood With Water.

Works Great And Leaves -

A Shine. Funny Huh?

Seriously. I Ain't Kidding.

Cover Your Alternator With Plastic Just In Case.

The exterior correct? Easy, "Gunk." Spray it on and let it sit and spray it off, does work, I've used it. If the engine is out of the car, even better.

if the engine is hot you spray several cans of gunk or similar engine degreases on her and let set a few minutes then rinse. I used casterol superclean once and it worked almost too good took my engine paint off.

you can spray a light coat of kerosene on it or use engine gunk that will soak it off and clean it real good then use a hose or a pressure washer on it that cleans them off real good,be careful with a pressure washer they can do more damage than good ,a good garden hose is the best way to get it all off with the use of gunk,good luck.

Have the engine compartment steam cleaned or pressure washed

DO NOT TAKE THIS OFF UNLESS YOU WANT TO REBUILD THE HEADS!!!!!!!!!!!!!!!!!!

exterior use a light coat of starter fluid an a pressure washer,but take it off fast because it can eat paint

if your willing to rebuild a few parts then take it all apart. make sure you know what your doing or take it to someone you trust.