Quote Originally Posted by Jazzdude View Post
So if a person takes really good care of the engine (regular servicing, 98oct fuel, synthetic engine oil etc.), and does not ever go over 2500-3000rpm, can a Honda engine last 'forever' or will it eventually fail?
If they go uphill at 2500rpm and lug the engine, it will fail

But if the engine was designed for 300,000km @ 4000rpm, then it should last 400,000km at 3000rpm.

Note: my figure for 300,000km is just a guess. Honda might have designed it for 200,000km or for 400,000km, I do not know the exact number.