How thin will they go?

[jmacmaster]

I suspect that if the manufacturers did what JB recommends in his last post it would drive up the cost so much that most of us wouldn't be able to afford their vehicles

 

[MO]

GMorg, whaddya mean?

I thought carbon fiber grew on a tree, all by itself, just like ethanol and hydrogen. You don't mean to say these things require energy input, do you?

Matt

 

[MN Driver]

Quoted from a pdf on Alisyn ProDrive 21 Type 1:
http://aerospacelubricants.thomasnet.com/asset/ProDrive Type 1 TDS.pdf

SAE No. Temps in F.
Viscosity @ 210 36.7 SUS 3.16 cSt
@ 100 76.3 SUS 14.20 cSt
@ 0 247 cSt
@ -40 2,560 cSt
@ -65 18,900 cSt
Viscosity Index 85
Flash 360
Fire 390
Pour point -80

The PDF says that the temperature range is -80 to 300 degrees F

No HTHS is in the datasheet but with 3.16 at 210 degrees F versus the current weights I know that my car would probably consume the entire crankcase worth of oil in less than a hundred miles on a summer day.

I wonder if somebody took a 50 weight oil and mixed it with this if it would even produce a Homogeneous mixture with such a large difference in viscosity.

 

[Drivebelt]

There was a test (Japanese) on a 0w-10 oil. As compared to the reference 5w30 …

quote:

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link.pdf

In addition, whereas the oil consumption volume per hour was 1.0 g/hr for oil
on the market, it was extremely large at 1.8 g/hr for the test oil. As mentioned in the previous
section, the NOACK of test oil 14 is in no way inferior to that of oil on the market, and because
the lubricant oil temperature during implementation of the engine test was limited to the low and
medium temperature ranges, it is believed that mechanical lossesdue to the ultra-low viscosity,
rather than vaporization volume, are the main causes of increased oil consumption. Moreover,
because of low viscosity, the seal property worsened due to lubricant oil at the cylinder liner,
and blow-by gas volume increased. There was also a large volume of oil consumption, and
points such as these suggest that sludge production may have been promoted.


… was found that ultra-low viscosity worsens performance in cleaning and in high-temperature
oxidation stability.

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Whether they can make an engine that will seal well with much lower than a 20wt will be interesting. There is quite a bit opinion out there that thinks ~ 30wt is the ideal for oil and the best overall “compromise” weight. It will be interesting to see how this thin oil trend plays out.

 

[427Z06]

quote:

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Originally posted by Drivebelt:
There was a test (Japanese) on a 0w-10 oil. As compared to the reference 5w30...

Whether they can make an engine that will seal well with much lower than a 20wt will be interesting. There is quite a bit opinion out there that thinks ~ 30wt is the ideal for oil and the best overall “compromise” weight. It will be interesting to see how this thin oil trend plays out.

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It's been awhile since I read that paper but IIRC, they may no changes to the engine in the test. Something as simple as a small change in piston ring end gap can have huge effects on how a particular oil performs. In short, one has to be careful when extrapolating from the academic to the real world.