Thanks for all your advice guy
Thanks for all your advice guys, my engine is relatively clean, but has a few dark marks, like stains in the aluminium that I would like to remove.
David, I’ll give mag wheel cleaner a shot and if I’m lucky I’ll have a result as clean as yours. Tom, too late for me to power wash the engine, it’s already out and apart, but I will also check out Super Clean, can you tell me where it is available? I did an internet search and you can imagine how many things came up with super clean. JRV your point is taken on the differences in the casting and metals between the 3x8 and the 12’s, but I’d be happy with a block as clean as David’s.