Engines losing power with age question!
Discussion
Ok, the subject of engine horsepower in higher mileage engines. Its always puzzled me why car engines lose horsepower as the miles stack on. Mainly because I had always understood that engines free up with miles and are tighter when new. However, seeing various rolling road articles involving reader cars with say, 80,000 miles or more on them typically sees a reduction on original quoted BHP of 5-10% or more.
So, what is the optimum mileage on an engine when its freed up, but is new enough not to have lost a few horses?!
Also, is it true that diesel engines tend to not lose as much power as they age, perhaps because they wear less as they aren't so rev happy?
So, what is the optimum mileage on an engine when its freed up, but is new enough not to have lost a few horses?!
Also, is it true that diesel engines tend to not lose as much power as they age, perhaps because they wear less as they aren't so rev happy?
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