Thin vs Thick Discussion Chapter 1
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Oil being "thick" at lower temperature is not a problem at all. Internal combustion motors create heat, modern turbos create a TON of heat. I want an oil to maintain viscosity at over 300f. Gokhan even has a chart showing full shear of oil to show how oil holds up inside a motor in places with tight tolerances and extreme pressure.
If start up wear was so bad then manufacturers would spec 0w16 oil.
This isn't the case, we have vehicles with turbos making well over 200hp per litre.
If you ran a 0w16 in a car designed for 5w30 it would have 10x the wear during operation vs start up.
If start up wear was so bad then manufacturers would spec 0w16 oil.
This isn't the case, we have vehicles with turbos making well over 200hp per litre.
If you ran a 0w16 in a car designed for 5w30 it would have 10x the wear during operation vs start up.
"If you ran a 0w16 in a car designed for 5w30 it would have 10x the wear during operation vs start up."
You may want to read this thread:
You may want to read this thread:
Dropping from a 60 Grade to a 20 Grade Oil Revisited
Dropping from a 60 Grade to a 20 Grade Oil Revisited
It may be worth revisiting this very old UOA comparison. I have not seen a similar item recently. I am giving evidence that thinner oils can be used when otherwise very heavy grades may be specified. And that thinner oils may result in much less wear than when the “recommended” oil, in the...
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Besides … think I just ran completely out of sports I care about … so less W’s to worry about
How can the pressure go up if the flow decreases, and how can the the pressure go down if the flow increases when a PD oil pump is moving the oil?
Most of us were past the 10 when cold and 30 when hot concept 30 years ago when 10w30 was considered a thin oil.
When I go out to start an old beater, I'll pour gasoline down the carburator. That's why I have no hair and fuel dilution issues.
Besides the recommended 15w40 in Duramax (s), I tried and UOA'd 10w40 pcmo, SAE 30 & 40.
The 10w40 sheared from 15.4 to 11.8 in 9,000 miles. The SAE 30 gained from 11.2 to 11.6.
The SAE 40 lost a little from the published spec, but showed single digit Fe after 10,000 miles.
All Petro-Canada, but I doubt if other brands would be much different.
I have an unopened pail of Duron 10w40 I'll have to try out before it's stale dated.
I would imagine it's much more shear stable than their 10w40 car oil.
When I go out to start an old beater, I'll pour gasoline down the carburator. That's why I have no hair and fuel dilution issues.
Besides the recommended 15w40 in Duramax (s), I tried and UOA'd 10w40 pcmo, SAE 30 & 40.
The 10w40 sheared from 15.4 to 11.8 in 9,000 miles. The SAE 30 gained from 11.2 to 11.6.
The SAE 40 lost a little from the published spec, but showed single digit Fe after 10,000 miles.
All Petro-Canada, but I doubt if other brands would be much different.
I have an unopened pail of Duron 10w40 I'll have to try out before it's stale dated.
I would imagine it's much more shear stable than their 10w40 car oil.
Refresher?? No that’s not what this is.
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On my worst days: 4 Wheels Down !^^^ I thought "4WD" stood for "For Winter Drive".
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I enjoyed reading this so far, quite enlightening for me, a neophyte, on all the nuances of lubricants and their classifications. One thing I take away from this is the quibbling over the "W" as in 5W/20. For many years I believed it stood for weight and I see others here believe it stands for "winter". Winter is a subjective term that is interjected into all these tables of objective data and is useless in choosing an oil when I look at winter here in south Louisiana where we rarely drop below 32 degrees Fahrenheit and compared to someone who lives in Nome, Alaska who may see that temp in late spring. The only definitive answer for what "W" stands for in an objective measurement for the number the it follows is this quote posted by an earlier poster. So there it is, "W" means that the number preceding it is the viscosity measurement at -18 degrees C, (0 degrees F), a temperature I hope never to experience here in South Louisiana. 
Now is it time for me to continue on to Chapter -2-.
Now is it time for me to continue on to Chapter -2-.
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But what is winter??? I know it starts December 21 but we can have 80 degrees...is that winter? I think the W is just a way of separating the the two numbers, any letter, asterisk, or a dash could be used to separate the two. W is just a letter that was at one time used to denote that was the viscosity rating for the winter time and has just remained over time. Today the measurements are at done at specified temperatures and denotes that the oil labeled such pass the test in the within the allowable parameters.
I would guess W is just nomenclature, and they figured winter being cold is easy to understand, so make it a W. I used to use this grade in a car.
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I used to use this grade in a KO Lee crystal dicing saw hydraulic drive system for the table feed.
So I have some memory left which is what a happy about.
Thick and thin could be debated too, how can two words describe two completely different things? I guess it’s English. Thick and thin to me really mean a length measurement. Low viscosity oil isn’t thinner than high viscosity as far as how wide they are.
Find SAE 20w-20 Diesel Engine Oils Here
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I used to use this grade in a KO Lee crystal dicing saw hydraulic drive system for the table feed.
So I have some memory left which is what a happy about.
Thick and thin could be debated too, how can two words describe two completely different things? I guess it’s English. Thick and thin to me really mean a length measurement. Low viscosity oil isn’t thinner than high viscosity as far as how wide they are.
If people can't understand what the "W" in 5W-30 means, just think of the confusion if it was:
5R-30 or 5K-30 or
5°-30 or 5- -30.
"Winter" basically means "cold weather" or "cold temperatures", so it makes sense to use "W".
I guess Valvoline, who's been making oil for over 100 years, is wrong saying "W" stands for winter, lol.
5R-30 or 5K-30 or
5°-30 or 5- -30.
"Winter" basically means "cold weather" or "cold temperatures", so it makes sense to use "W".
I guess Valvoline, who's been making oil for over 100 years, is wrong saying "W" stands for winter, lol.
Look it up in a dictionary, English words have many meanings.Thick and thin could be debated too, how can two words describe two completely different things? I guess it’s English. Thick and thin to me really mean a length measurement. Low viscosity oil isn’t thinner than high viscosity as far as how wide they are.
Definition 2c:
Definition of THICK
having or being of relatively great depth or extent from one surface to its opposite; heavily built : thickset; close-packed with units or individuals… See the full definition
www.merriam-webster.com
Continuing on this program are we? Same old same old. You look it up for yourself. I already mentioned that it's English. Same word more than one meaning. Maybe your reading is too thin.Look it up in a dictionary, English words have many meanings.
Definition 2c:
Definition of THICK
having or being of relatively great depth or extent from one surface to its opposite; heavily built : thickset; close-packed with units or individuals… See the full definition
There are different ways to approach discussion, one is not make it a pattern to put other people down. Of course I know thin and thick have many meanings, as well or better than you, let's just set that straight.
The thrust of what I was saying is how we apply thick and thin in different ways that have no relation to one another. Saying a wire is thin, then saying water is thin is a bit interesting, yes or no? Get it? It's not about me, there is a topic.
Then don't make a statement like: "Thick and thin could be debated too, how can two words describe two completely different things?" if you already know it can mean many different things and is a defined appropriate use of the word. I know what definition I'd pick for this one.
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Maybe you need to get out of Louisiana and see the world some? Most of the planet has a winter.
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