I bought two Taylor heavy duty fenders off of eBay and used "De-Solv-it"
(WalMart) and a stainless steel pot scrubber.

www.orange.sol.com

It is When applied to a dry surface and let sit for 5 or 10 minutes, then
re-misted if drying, followed with a scrubbing and rinsing. If a second
or third round is needed wipe or let dry before more De-Solv-it. After
they were clean I gave them two coats of paste wax.

Last summer we rebuilt the Perkins. While the engine space was opened I
think we used (10) 12oz. bottles of De-Solv-it to cut 30 years of black
grime. We used it as a first round of cleaning on the block and oil pan
as well. De-Solv-it leaves a slightly oily surface if only dry wiped.
So in the engine space we did a fresh water rinse with dry terry wiping
before applying the undercoating and topcoats.

Our interior is oiled teak which was covered with built up layers of
grime. A plastic bristle brush worked inline with the grain cleaned it up
real nice. Wiped off with terry cloth and then waxed.

I think the De-Solv-it is about $3 per 12 oz spray bottle in the household
cleaner's section.

Doug