why having short trips with a car are worse for the engine than the long ones?

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Often people explain that it’s because you ride a cold engine. But a long ride also starts with a cold engine. So how can two 5km trips per day be worse than a two 20km trips per day if an engine starts cold in both scenarios?

Or does this arguments works under presumtion that you ride 100km in 20 short trips vs 5 trips?

In: Engineering

7 Answers

Anonymous 0 Comments

This is usually said referencing many short trips vs one long one.

Assuming the same number of trips it may have some different issues, e.g. if you never get fully up to temp because it’s all short trips you won’t be circulating much coolant and the system can get a little gummed up faster, but the overall wear of an equal number of longer trips will also add up. 

Some stuff is also jusy time, not mileage. Rubber seals and bushings only last so long for example.

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