0w100 Synthetic Engine Oil

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So is this the oil of the future?

100 seems way high for motor oil. It's even more than what you'd put in a manual gearbox or differential. It'd be very thick after warming up and , I think , would blow seals and drag power from the resistance of it's warm thickness. The zero is its viscosity cold and the 100 would be it's viscosity at running temps. Very, very, very thick

If you are using 5w20 or a 10w30 motor oil you are already using an oil that is way too thick. A 0w100 oil would provide instant lubrication at start up. Switch to a 0w20 or a 0w40 oil and then tell me that 0w100 is too thick.

Seems to me Androbot that you are focusing on the viscosity when cold, whereas Tourrette's post was about it being too thick when it got hot.

Do you live somewhere very very cold Androbot if you consider a 5w oil too thick?

I have an engine pre-heater on my car, I dont even need the choke to start it.`

Another thing maybe I should mention about synthetic oils, they now use very little zinc in order to prolong the life of cat converters, this isnt good news if you run an older car, especially one with flat cam followers.
I use Mobil One, but I also add a Zinc additive.

The viscosity of liquids decreases as temperature increases. The viscosity of a lubricant is closely related to its ability to reduce friction. Generally, the least viscous lubricant which still forces the two moving surfaces apart is desired. If the lubricant is too viscous, it will require a large amount of energy to move (as in honey); if it is too thin, the surfaces will come in contact and friction will increase.
I use 5-30 in my car cause that's what the manufacturer recommends as was the car I had before that. The 90 weight oil I used for my manual trannies was 90-120. Differentials use the same. Its thicker than molassas.
You asked me to use standard motor grade oil in my car. I do ,as does billions of other drivers. Why then , don't you try some 90 weight in your car and see how it runs. All auto parts places sell 90 weight.
I've used Amsoil Synth oils for 20 years. They were originally developed for EXTREME high temps in jet engines. I think what you read about 100 weight is the oil a jet might use, But , for me, I'll stick with what the manufacturer recommends, and I have a feeling he (and everyone else) knows more than you.
I have not seen anything searching the internet for anything close to SAE 100 oil. Perhaps you can post the link you got this info for as I'd like to read what is said about it.
Meanwhile, this sheds light on oil viscosities and the 1st paragraph talks about what high viscosities do. The second number is the viscosity at 100 degrees centigrade and I don't see my cars oil pump trying to PUSH syrup thru to my valves and crank bearings.

By the way, what do you buy when you change oil ????

Cheez,, forgot to post the article:

http://www.upmpg.com/tech_articles/motoroil_viscosity/

My longtime buddy "Bob the Oil Guy" was pretty open to the subject. Seems we're talking 2 stroke diesels and jets. My chevy is neither. This article stars our boy contradicting what he told me about running standard SAE 5-30 as recommended.

http://www.bobistheoilguy.com/forums/ub ... 3&page=all

Bob the Oil Guy champions 0w20 and 5w20 engine oil. If you disagree you get called a troll. Although these are good oils they won't work in high performance engines. For example a Honda turbocharged engine requires a synthetic 5w30 oil. But I am still a troll because I am off topic .

One has to (had better) use synth in turbos. Dino oil will burn and 'coke' up the turbo impeller bearing. So, Bob endorses the stuff your telling me not to use. Mmmm.......I've had Bob bookmarked for a long while and he helped a lot of info when I got my turbo-diesel.

what oil to run? check your owners manual. Mycar for example at the higher temperature threshold asks for 20w50. Plus the thicker oil means the 265,000 mile engine get better lubrication in worn out spots.

20w50 does not give good lubrication at cold start up. That is why BMW does not recommend 20w50 but rather 10w60 for its high performance engines. But why stop there? When owners manuals stop suppressing technology a 0w70 oil will give even better performance.

Anyway if 0w100 is too thick why are motor oils formulated with zinc anti-wear additives?

Zinc is used because mainstream 5w30 motor oils are way too thin and the film strength fails so zinc is used as a backup lubricant to prevent metal to to metal contact.

A thicker oil can also prevent metal to metal contact so why do we think that any oil that does not fail is too thick?

Maybe we do not realize how thin oil can get when it is heated.

The real test is to have the oil assessed by a company like Blackstone.

The 300 degree high temperature high sheer viscosity is a good indicator of an oils performance.