What are the dangers of short trips and stop/start city style driving?
Almost all engines need about 15 to 20 minutes of operation for the lubricant to reach optimum operating temperature, at which point the harmful by-products of combustion are mostly blown out of the exhaust system. Harmful by-products (e.g. water and unburnt fuel) can lead to severe damage of the lubricant and the engine. They can also lead to the creation of sludge. The quality base oils and additive systems of Castrol engine oils minimise the effects of harmful by-products and in turn, reduce and improve cleanliness and life.
