JIM5.0

Just so I can be better educated, can you describe in depth what this shearing resistance is you are describing? I am not familiar with the term and how a fluid can resist shearing forces. Forgive me, when I think of shearing forces, I think of solids (the ultimate form of shearing force resistance, at least until the material fails).

Norm Peterson

I'd start here. Not sure what happens on a molecular level, but I doubt it to be good.


Norm

Unleashedbeast

Thanks Norm.

To put it in easy terms Jim5.0,

Let's say a lubricant is formulated to be a 30W at 100*C, but as the additive pack and base stock break down after many miles of use the oil thins to a 20W oil. This is called shearing.

100% true synthetics resist shearing much better than a petroleum (group III) based oil due to the superior PAO group IV base stock and additive pack. Just another reason why you have much longer drain intervals of a true synthetic.

DreamerGT

Remember all oils are formulated differently. A thin 30-weight is more likely to drop to a 20-weight with just a little bit of shearing. A thick 30-weight will have a longer way to go before it thins, if at all.

Unleashedbeast

Very true Dreamer, good addition of information. Seems I always forget the detail while typing at work.

everett

K found it. Great write up I will be switching back to 0w30. If you weren't aware if you register with amsoil they will recognize you as a preferred customer and sell everything they supply at wholesale. But from the wealth of knowledge you possess I will assume you are already a dealer

EVILHORSE

This was a great read unleashedbeast , but will i see the same results on a 4.0L v6 as you do your V8's ???????

Unleashedbeast

of course you will, the same principals apply. Try it, and see for yourself.

keisha008

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ticopowell

Great info! thanks for the work, but a few questions for you...
Am I correct in assuming that the same concept applies to my 5.0 engine? and also I assume that any full synthetic, Amsoil, Royal purple, etc.. will have the same effect on performance?
Thanks!