How do I clean years of caked-on grease off of a range hood?

I think this post might be able to help you:

https://www.hometalk.com/diy/clean/appliances/cleaning-kitchen-grease-stove-hoods-4131035

Use vinegar.

krud cutter would probably do it! Home Depot or Lowes carries it.

I would recommend Gp66 degreaser for this job. Saturate and let sit for a few minutes, then wipe away. You may have to do this several times.

Totally Awesome Degreaser, not diluted.

I use TSP substitute in a spray bottle mixed with water and a rag. Cleans grease right off with zero effort.

This video will help. https://www.youtube.com/watch?v=_k4QvvrplS4

I have used Goo Gone and a microfiber cloth or magic eraser with success. Let the Goo Gone sit for a few minutes.

Try Steam Cleaner, Stainless Steel Cleaner, Bicarbinate of Soda and Vinegar. Warning, It is going to be a messy job, so cover under the hood with maybe an old towel...

Hi Cricket: That's my car's name :) What I use is a 50/50 mix of vinegar and warm water and a dash of Dawn dishwashing liquid. Mix this up and put it into a spray bottle, or just into a pot or bowl, wet the area with this mixture and scrub with a small brush like a veggie brush. If the grease buildup is heavy, you may have to do it a couple of times, but this should do it. Then, put a coat of wax, like car wax, on it to keep it slick.