Today most modern cars should come with an oil/water heat exchanger.
The biggest nonsense here is trying to use coolant temperature to gauge oil temperature, you're a whole order of magnitude and an entire system away. At least try and make the argument you're monitoring oil temperature and not coolant.Yes, and the main reason a +/- 2.5F change is basically noise.
In highschool auto shop we learned that oil cools,cleans and lubricates.
The oil is generally cooled by indirect air cooling. The oil pan is a big oil cooler. In the olden days, the oil pans were often finned to accomodate better cooling, and inline with airflow under the car.
Yes, a thicker oil will heat more from shearing in the same exact use conditions. The difference in shearing friction becomes smaller the hotter the oil becomes, so part of saving fuel is also in the warm-up stage of the engine running when the oil goes from very thick to very thin, relatively speaking.Wouldn't thicker motor oil get hotter more from pumping losses (the oil pump has to work harder to push it through the filter & bearings), more from friction in the bearings, and make the engine work harder as it does so? That's the whole concept behind CAFE driven viscosity decreases, to try to minimize friction (for some incremental MPG gains). I'm sure straight 40 or 50 takes a lot more energy than 0W-8...
My 2017 5.3L is quieter on 0W20 than my 2010 5.3L was on 0W40 … (2018 was too) …The Gen 5 Chevy LS engines have oil jets that spray the underside of the pistons.
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They all have a lot of air cooling. The air is what cools the coolant.Yes oil flow is critical to the internal oil cooling process. So thinner oils *can* cool better than thicker oils, which is the main reason why I am not a fan of going too thick (a little is ok IMO). But oil flow is not determined by viscosity alone... the type of oil pump, deposits & sludge, etc. all have an effect on oil flow.
No engine has 100% cooling provided by the circulation of engine oil. Every engine has either a liquid or air cooling design. Liquid cooled engines usually have some air cooling as well.
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So the Temp gauge in my GM 1500 is a Coolant sensor? Is the oil usually hotter or colder in proportion to the coolant temp? For instance, on short trips, the Temp reaches optimum temp relatively quickly, is the oil still heating up or does it heat up faster than the coolant temp reads?The biggest nonsense here is trying to use coolant temperature to gauge oil temperature, you're a whole order of magnitude and an entire system away. At least try and make the argument you're monitoring oil temperature and not coolant.
But better than your perception of cooling fan cycling rate I guess
So the Temp gauge in my GM 1500 is a Coolant sensor? Is the oil usually hotter or colder in proportion to the coolant temp? For instance, on short trips, the Temp reaches optimum temp relatively quickly, is the oil still heating up or does it heat up faster than the coolant temp reads?
In the early 80s, one hot summer week in San Diego we towed 3 Chrysler/Dodge slant 6 equipped vehicles off the freeway, all had thrown the #6 rod through the block just above the starter.Back in the day, on really hot afternoons, it was fairly common to see dead VWs and Corvairs off on the side of the interstate.
Different engine designs. 2014 and up have several improvements to make them quiet. I am amazed at how quiet my (new to me) 2016 is.My 2017 5.3L is quieter on 0W20 than my 2010 5.3L was on 0W40 … (2018 was too) …
always figured the PJ’s were part of the reason …
Yes, I’m very familiar with L83’sDifferent engine designs. 2014 and up have several improvements to make them quiet. I am amazed at how quiet my (new to me) 2016 is.