Oil is critical to your generator set as not only does it circulate lubrication through the moving parts of the engine, but it also enhances fuel efficiency and prevents deposits and sludge.
Like the fuel filter the oil filter is also used to keep the engine clean. The oil filter extracts the soot from the oil breakdown and the burning fuel, and it extracts metal contaminants. Without effective filters and oil changes, contaminants build up on the engine parts and oil passages causing restricted flow, low oil pressure and engine hot-spots. Contaminated oil can also cause wear on the engine leading to premature engine damage or even engine failure. Typically all the lubricating oil in an engine passes through the oil filter every 12-15 seconds, so the oil filter needs to be able to capture the soot and the deposits but not starve the lubrication system.