Questions about the Lubrizol Relative Performance Comparison Tool

Joined
Dec 1, 2014
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As you compare different specifications of oils (https://online.lubrizol.com/relperftool/pc.html), the differences on the scale sometimes look to be significant...but are they really? How do you know just how different some specs really are.

I ask because if the grades on the scale are very close, then two different specs appear to be very different but, in reality, they may not be much different at all?

Hopefully my question makes sense. Can somebody clarify this for me?

Thank you,
Ed
 

OVERKILL

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As you compare different specifications of oils (https://online.lubrizol.com/relperftool/pc.html), the differences on the scale sometimes look to be significant...but are they really? How do you know just how different some specs really are.

I ask because if the grades on the scale are very close, then two different specs appear to be very different but, in reality, they may not be much different at all?

Hopefully my question makes sense. Can somebody clarify this for me?

Thank you,
Ed
As the tool explicitly states, it is designed to allow you to contrast the difference emphases placed on the different areas within a given suite of approvals. That means, you can compare MB approvals to each other, BMW approvals to each other, ACEA categories to each other, but not BMW to MB for example.

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