Why lifetime engine oil isn’t possible.

Imagine if a lifetime engine oil was possible! No messy oil changes, no costly labour and parts: So why is this not a reality?

Already manufacturers such as BMW, Mercedes and Volkswagen fill their transmissions with lifetime transmission fluid and claim the original fluid will last the life of the transmission. By way of example a 2009 BMW came with a 4-year 100,000-kilometer warranty which included no oil changes: And if you examine the service schedule you’ll see there’s no transmission oil service in this period.