Kevin talks oils - Wrist Twisters
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post #1 of 10 Old 01-26-2016, 03:55 PM Thread Starter
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post #2 of 10 Old 01-26-2016, 04:28 PM
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Good stuff! Never really thought about the wide range of duties/ temps that oil encounters in the engine and transmission for bikes.

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post #3 of 10 Old 01-26-2016, 05:51 PM
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Hmm...I thought the 10-40 "falling apart" was a thing of the past (80s) with better additives today. People used to stick with closer multiviscosity because of the breakdown of "stretched oils" but the oils today should have better additives. Not sure about the gearbox part though.

I use Mobil Delvac (Rotella equiv)and the gear box is happy along with the engine. Shifting is so much smoother over the Rotella too.

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post #4 of 10 Old 01-27-2016, 06:35 PM
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Quote:
Originally Posted by andrewebay1 View Post
Hmm...I thought the 10-40 "falling apart" was a thing of the past (80s) with better additives today. People used to stick with closer multiviscosity because of the breakdown of "stretched oils" but the oils today should have better additives. Not sure about the gearbox part though.

I use Mobil Delvac (Rotella equiv)and the gear box is happy along with the engine. Shifting is so much smoother over the Rotella too.
Oil just gets better, although some will dispute that re reduced levels of "nominal zinc", for example.
So called “falling out of grade” is a simply another characteristic that has been improved over time.
My guess is that any engine oil, intended for use with an extended drain schedule, that is required and/or blessed for use by sanctioned for use BMW or Mercedes, has been proven not display any problematic level of "falling out of grade”, and that other top tier oils will behave similarly.
In other words, present day good stuff used in drain schedule consistent with the oil and its actual use, won’t display a problematic level of "falling out of grade”.
As some insight towards the concept of “falling out of grade”, is the result of a multi-grade gear oil subjected to a KRL 20 Hour Shear Stability Test. The short story on this point is that it is impossible to make a multi-grade oil that does not exhibit some loss of viscosity after being beaten to death for 20 hours, and the real issue is “by how much”, and not at all a yes or no. As long as the degradation is within the “OK” band, it simply is not an issue.

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post #5 of 10 Old 01-29-2016, 01:44 PM
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Hmmm, what has happened to Wrist Twisters re reaction to anything oil related ?
K1w1Boy bated the hook.
andrewebay1 cast the hook.
I tried to do some jigging.
Despite all that, narry a nibble.
I'm shattered, where have all the oil fanatics gone?

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post #6 of 10 Old 01-29-2016, 06:47 PM
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post #7 of 10 Old 01-30-2016, 07:44 AM
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Excellent, looks like the thread is starting to get some traction !

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post #8 of 10 Old 01-30-2016, 08:03 AM
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Quote:
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Isn't that Augustus P. Rotella?

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post #9 of 10 Old 01-31-2016, 04:52 PM
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Isn't that Augustus P. Rotella?
No no. That's O. Lynns Fark-el! He's just dabbled in the oil business on the side

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post #10 of 10 Old 01-31-2016, 05:57 PM
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No no. That's O. Lynns Fark-el! He's just dabbled in the oil business on the side
He transformed the oil business!
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