Modern engines are severely tested for durability. One automaker runs the engine at maximum output power - not redline - and then pumps -22 F coolant into it! It gets worse.
The point is in a modern engine in good running condition running it to redline is not harming it at all. It may actually help clean rings and valves which get tons of deposits in engines that do not get a little revved up now and again...
The point is in a modern engine in good running condition running it to redline is not harming it at all. It may actually help clean rings and valves which get tons of deposits in engines that do not get a little revved up now and again...