Triple_Se7en
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Originally Posted By: Shannow
Originally Posted By: OilUzer
but this is where it get interesting (at least for me) ...
he said that some 0W oils can be thicker than a 5W of the same grade except at very low temperatures ...
i need to corner him again about the above statement since it initially confused me but I can now picture how it can happen. it raised another question for me regarding the graphs and linearity etc. which i may ask in another thread.
0W 40 will be typically thicker than a 5W20...except at the limits of pumpability.
Yes, an oil that narrowly misses 0W would have to be labelled as a 5W...the oils HAVE to be labelled the lowest grade that they meet.
If they don't make 0W, they can't be labelled that, and will never be labelled 2.5W, in spite of how fuzzy it makes you and your chemist friend feel.
Our backyard chemists have it correct. For if it is 2.5W, then it can't be 5W.
Stupid regulations say it must be 0 or 5. But only a few years ago, those regulators disallowed the number 16.
Someone needs to disallow those regulators - or at least make them take 10 classes (Human Lie Detector 101).
Originally Posted By: OilUzer
but this is where it get interesting (at least for me) ...
he said that some 0W oils can be thicker than a 5W of the same grade except at very low temperatures ...
i need to corner him again about the above statement since it initially confused me but I can now picture how it can happen. it raised another question for me regarding the graphs and linearity etc. which i may ask in another thread.
0W 40 will be typically thicker than a 5W20...except at the limits of pumpability.
Yes, an oil that narrowly misses 0W would have to be labelled as a 5W...the oils HAVE to be labelled the lowest grade that they meet.
If they don't make 0W, they can't be labelled that, and will never be labelled 2.5W, in spite of how fuzzy it makes you and your chemist friend feel.
Our backyard chemists have it correct. For if it is 2.5W, then it can't be 5W.
Stupid regulations say it must be 0 or 5. But only a few years ago, those regulators disallowed the number 16.
Someone needs to disallow those regulators - or at least make them take 10 classes (Human Lie Detector 101).