Okay this may be a dumb Q but i dont want to ruin my motor. So i bought this car recently. LOVE it. its a 91 coupe and i looked at the motor and it looks as it is leaking. So i wanted to know if i could wash my motor to find where it is. Ive been looking for vids on how to but everytime i find one someone says that its dumb to do.

So i figured id go to the guys/girls that know 240s the best. What is the best way to clean my motor and what products i can use. Also what should i cover like distributor cap, battery, alternator, starter, etc.. I'd much appreciate this so i can get this bad smell away and find my leak. Thanks
Heres the motor:
