Engine block

Cylinder head

Exhaust manifold

Oil sump

Minimise the friction

Increase the friction

Increase the wearness

Increase the noise

Provide a cushioning effect to oil filter

Increase the wear and tear of the moving parts

Increase the blow by gases by providing an oil

Minimise the wear and tear of the moving parts

By injecting water solvent

By injecting oil solvent

By injecting fresh air

By cleaning tools

Check visually

Check with special tools

Check with computer

Check with bore dial gauge