I was surprised a bit about the heat difference side to side. The port side of the engine is much hotter than the starboard side. This does explain why all the predictions of doom and gloom for a cold engine do not come true. I have not run a thermostat in ages, my water temps usually are about 120 and rarely past 130.
In theory that should cause a ton of fouling and stuck valves, not to mention badly fouled oil.
In practice the part of the engine where the valves are runs way hotter than the coolant and so does the oil. I need to see if I have a good photo, but the oil is way hotter than the water in my engine. When I changed it last week it seemed like a waste of good oil, it literally looked brand new.
What is your oil pressure? Perhaps you could use an oil cooler?
You don't want to be too hot or too cold.
My oil pressure is pretty much rock steady on 40 PSI. I plan to add an oil temp gauge when I have a free minute.
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