Carbon, Gum, and Varnish Clogging Oil Galleries?
Insufficient anti-oxidant and the oil can quickly thicken during high temperature motoring, with large amounts of carbon, gum and varnish clogging oil galleries, filters and piston rings. Anti-wear additives are added to ensure that if the oil film between moving parts breaks down prematurely, metal to metal contact and irreparable engine damage is prevented.
Engine internals can become pitted with corrosion and rust from acids and water vapor formed during combustion. With the correct corrosion inhibitors, the components are well protected. Special dispersant additives prevent soot, wear metals and the by-products of combustion settling out in the sump and other areas of the engine, and forming a thick sludge that can block filters and oil ways.
If there is inadequate pour point depressant the oil ceases to flow at low temperatures, with excessive strain on the oil pump or in certain cases, oil starvation on start-up causing complete failure of the lubrication system.
Using the most appropriate and carefully balanced additive technology to provide the best protection and performance for your classic engine will give you the best results to avoid premature engine failure. It is recommended that you consult an engine oil specialist before using over the counter engine oils.