wn1998, absolutely LC will clean.
Lube Control levels the TBN, reduces oxidation, provides an extra measure of lubricity, provides extra rust control, and will literally melt (soften and emulsify) carbonaceous deposits. It then places these carbonaceous deposits into the oil solution. Lube Control can also be used as a cylinder prepatory storage oil (squirted into the individual cylinder) in automotive and small engines to clean carbon deposits and keep rings and cylinders from rusting during storage.
For conventional and synthetic Oils
Dissolves Carbon and Varnish
Dissolves Sludge
Improves Viscosity
Reduces wear numbers
(Important) Reduces Oxidation