| The method I use to clean engines is to drop them into a slow cooker filled with anti-freeze. For a lightly soiled engine a few hours are enough but overnight is required for a more heavily soiled engine.
It does change the colour of anodising and it will remove the blue paint from an OS LA series engine so it is best not to use it with this type of engine.
I position the crankshaft so the inlet and exhaust ports are closed, this prevents the antifreeze getting into the crankcase but I always give the engine a good spray with WD40 and run the engine as quickly as possible.
Someone once told me to use Ariel Bio washing powder, if I remember correctly, boiled in a pan, this cleaned the burnt on crud but also attacked the castings so I wouldn’t recommend it. |