use a case of::
go to one of those dollar stores and buy....
Easy Off Ovan Cleaner, let it soak into the greasey areas overnight. in fact spray over and over again those areas. remember to shake the can ... lots
hose off the heavy crud or scrap it off.
repeat..................
repeat.................
now take it to a coin spray washer and degrease it
again
you should be in pretty good shape by the 6-8th time.
Have Fun & drink beer
