Yup, I wuz plumb anxious when the data first started coming in ....
I figured the red stuff had to have some serious mojo going for it as
Klotz two stroke DID have some really good properties that I was very well aware of.
But, as it turned out red stuff for 4 strokes apparently doesn't carry over the crown of excellence that Klotz had won as a two stroke oil,
not in a Savage engine anyway.
It performs about SAME - SAME in the Savage engine (and I ain't a sweating me a few degrees of head temperature neither way).
Same-same, it just costs a lot more and is a good bit more trouble to get a hold of.
Now, me teasing you with hillbillies and big fishhooks, now that's almost fair game in an oil war -- it motivates you to go find whatever you can to support your position.
So, what do you have for us? Or has this oil war done peetered out due to lack of evidence on the opposing side?
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Stroke your crystal ball and peer into it for a moment ---- two 6" Pyrex test tubes plumb full of freezer cold oil (one 15w50 Klotz and one 5w40 Rotella T6) with temperature thermocouples supported up in the last 1/2" of oil up in the top of each test tube, thermocouples that are hooked up to a three channel data recorder. Everything starts out below zero degrees F ..... There is a third thermocouple recording the ambient freezer temperature, just for the giggles of it.
The two parallel Pyrex test tubes are dipped 1/2" deep into a pan of hot cooking oil that the third thermocouple is put down into to record the "ambient" hot oil bath temperature. The oil is 350 degrees F.
Data is sampled 4 times a second, generating a temperature response curve for each oil type, both raw temperature change and factored against the bath ambient temperature.
What would it show?
The lower first number oil would respond quicker when very cold, and the lower second number oil would respond quicker when the temperature went up past room temperature.
Take the parallel test tubes out of the hot oil bath and put them back into the freezer (along with the ambient bath lead of course) with all 3 leads going out the freezer door to the data recorder to cut the curves for the cool down part of the test.
When still very hot, the lower second number oil would respond quicker on the cool down phase. Once it drops below room temperature, the lower first number oil would respond quicker on the cool down phase.
What would this test likely prove? That 5w40 Rotella T6 can suck heat out faster and dump it somewhere else quicker than 15w50 Klotz can?
But what news would this really be?
That's the exact same SAE testing that put the silly weight numbers to the two different types of oil in the first place, just done slightly differently.
Then to add insult to injury, we would pour out the two oils when really really cold to see which one poured better ....
Hummmm .... Rotella T6 wins every test, doesn't it?
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Bill, what can you figure out for a test that would show your 15w50 Klotz to have some sort of advantage?
Logically, it wastes more engine power due to its thicker viscosity, it transfers heat less effectively (same reason) and it costs a bunch more to buy it and ship it to your house.
What's that red stuff good for again?
You gotta figure out SOMETHING it is good at.
(or I think you done lost this oil war too)
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JOG, I think that explains your question about why the Klotz head temperatures run hotter yet the Klotz in the sump runs about the same temperature (give or take a degree or three) -- it simply doesn't pick up head heat as quickly nor does it dump what heat it does pick up very effectively nor very quickly either. Remember the ratio of the amount of oil in the sump to the amount of oil circulating through the head is about 50 to 1 volume-wise so the sump being 3 degrees hotter is the result of the small volume of 10-13 degree hotter oil coming back down from head into the 50 times more massive constantly churning sump mass and then slowly losing that heat to the outer cases.
Slowly is the key term here, on both ends of the heat exchange situation.
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