A solvent for cold sludge please?

[ordinarybloke]

Ah... a parts cleaner? Anyhting spring to mind as good? It can't harm the engine, I'll not be running it, and I'lll empty it out then flush throught with cheapo dino before filling with my Valvoline MaxLife Fully Syth.

 

[Trav]

I have used Gunk CC3K on some bad sludge and varnish at about 50f (overnight soak) and got outstanding results.
The color of the can keeps changing but its all the same stuff, it was white then yellow now its blue/orange.

http://www.oreillyauto.com/site/c/detail...1&ppt=C0090

http://www.deerso.com/product/d53492/carburetor--parts-cleaner?gclid=COLuhZCyjLoCFcyZ4Aodf18A9Q

http://www.hardwareandtools.com/Radiator...et-5304191.html

 

[ordinarybloke]

I don't know why I did not think of it beofre, but what i actually have here if I pump solvent in and out of my sump via the PCV is under another name, a Parts Cleaner, Thus it's Parts Cleaner Solvent I want I reckon, that is - if it'll do sludge... and i can't see why it shouldn't