22 --- Lubrication inadequate
Engine oil too low. Not only does the oil serve as a lubricant by preventing friction between moving components, but it also acts as a coolant. Check the oil level and replenish.
Engine oil overworked. The lubricating properties of oil are lost slowly during use as a result of changes resulting from heat and also contamination. Always change the oil at the recommended interval.
Engine oil of incorrect viscosity or poor quality. Always use the recommended viscosity and type of oil.
Oil filter and filter by-pass valve blocked. Renew filter.
© March 2015