I have a heady plastic bristle brush that I use with Bleche White. Stuff smells awful and in a more confined space like an engine bay will make you gag for sure, but you spray it on and within a few seconds, crap just starts falling off.Ah nice. I thought you went the route of spraying everything with a garden hose.
My transmission has lots of dirt and grime caked on. Any tips on cleaning that?
I used it on some heavy grime areas on the block, up around the head also where some oil was caked on. This stuff you pretty much want to spray on best you can and let it sit for a second and then scrub it with a stiff brush. With the bristles being somewhat stiff, expect crap to be flung all over; I put a shop towel over my hand and the brush to minimize having to reclean everything around it.