Higher operating temps necessary?

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Aug 15, 2018
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Texas, United states
I was doing an in depth conversation with GROK on the known issues with the 5.3 l83 and proposed some rules to the conversation. Basically it came to the conclusion that efficiency comes at a cost. Im from the old drag racer days of carburetors, then fuel injection, then higher operating temps, etc. Admittedly I care little about CAFE standards and have ran 40wt synthetic oil In everything I own and have never once had any engine issues. We discussed the higher operating oil temps, higher thermostat temps and all of the other things they compound. Basically we came up with that 180⁰ is sufficient for moisture boil off, and the engine and oil would last a lot longer if manufacturers would slightly upgrade their systems. Ie hybrid multi port injection to keep valves cleaner like the good old reliable engines, upgrades to the PCV system and so on. The conversarion was MAKE VEHICLES RELIABLE AGAIN. How is it that I have an old 1996 nissan hardbody that literally has never had anything done to it besides a distributor replacement yet some newer vehicles spend more time in the shop than they actually get driven? My 2004 tundra has 290k miles. My 2001 tacoma has 400k miles and neither burn a drop of oil between changes and I go 10-15k Oci. Yet chevys need 5-8k oci
 
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Not saying it’s the specific case here but in general the less heat that’s rejected to the sink the more that’s an available for work. All the heat that goes out the radiator is lost energy.
The Second Law of thermodynamics says to keep the "cold side" of a heat engine as cold as possible. If you reduce the heat sink capacity it becomes less efficient. It can't work at all without rejecting waste heat.
 
Not sure where you were going besides some random rambling and old car bragging.

Maybe have grok summarize that into something easier to read... ;)
 
Yes you want efficient transfer but every BTU that goes to the environment is lost.
Only in a system that has a design that can make use of that energy. A gas engine (for public road use) is a bit different in that you want to reduce NOx and pre-detonation by limiting the temperature, but not too much or else it has to run richer.
 
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