Engine oil needs to be changed often - though most dealers understand just how much a profit center that is and so encourage people do change far more often than the engine needs. All cars can go more than 7000 miles on an oil change, and 25,000 is possible on the best oils, but dealers still push the 3 months or 3000 mile nonsense and say it is treating the engine.

Chassis lubrication is needed much less often and often is lifetime as something else will fail that isn't worth replacing before damage from not doing it is noticed. If you really keep the car/bike for 30 years do it, but most people buy "the last car I'll ever buy" and 3 years later upgrade "that old thing", and in reality the car/bike won't be on the road at all in 20 years.