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O.K. So, modern superbikes like a Suzuki GSXR 1000, a Honda CBR Fireblade, A BMW S1000 R, a Kawasaki ZX 10 Ninja wich delivers over 200 HP from 1 Liter displacment at 14.000 RPM and use Fully Synthetic PAO motorcycle 10w-40 oils (And no 0w-40) are " older engine technology, matched with older...

Simple, basic summary after reading and discussing over 9 Pages: If you have the choice between a high quality PAO Based 10w-40 and a high quality PAO based 0w-40 for a high reving engine wich shears oil, choose the 0w-40.

I dont compare a simple 10w-40 with poor quality Base stock (Group I or II) to a PAO based 0w-40, i am only talking about a 10w-40 with high quality PAO base stocks. Otherwise it would be comparing apples with Oranges. I dont Ignore the Quality of the Base stocks, i never have done it. See my...

See my Post Nr. 163 here. I am VERY concernd about Shearing of VII ! That is the reason why i am using a 10w-40 at the Moment.

THANK YOU. You understand me. I am very concerned about viscositiy loss, shearing down. Thats why i try to use a oil with a small viscosity spread. The main Problem is, that nobody can tell from a VOA wich VI Improvers the manufacturers are using.

A Honda S2000 could do magic: I could make a 5w-40 out of Mobil 1 5w-50 in no time. About Two trips to the grocery store and this oil is sheared down. This was proven in the german Honda S2000 Form. There is one guy wich claims to work at Mobil Germany as Engineer / Chemitrist wich reccomends...

Thanks for your Patience and Time. I dont make a "Strawmen", my Understanding is simply that (Example) 0w-40 / 10w-60 have a lot of VI Improvers, while (Example) 10W-30 or 0W-8 are VI Improver free. That´s why i am aksing questions, to learn something, to gain knowledge, not to make a "strawmen"!

Page 8 in this Thread and we go round and around and around and around.... My question, again, is: - why are 10w-40 oils reccomended in Motorcycles, engines wich runs hot and with high pistons speeds? And, by the way, this oils tend to shear down in no time in these engines. - If 0w-40 is the...

That was exactly what the ROWE technican told me. - Change it every year, no matter how much miles you have collected. - Best to change it every 6000 Kilometers / 4000 Miles. - It is a modern Additive pack, save for catalyst. And you are good to go....He told me that the use of this oil is at...

....but in contrast reccomending 0w-40 to everyboy, for every application is O.K. beacuse "it is used by racing teams, by Porsche" and so on and on...? "No Matter wich Viscositiy the car manufacturer specs, use 0w-40!" Really? No technical - scientific sound explanation? Regarding the use of...

Ohkay.... According to BITOG, i should use a Diesel Truck Oil in a gasoline Car or even Motorcyle, wich is O.K. Dont care about the approvals. But... Using a High-performance Gasoline Racing oil designed for cars in a car on the street is a no-no. Because it dont carry approvals. Have i...

I posted a Picture of the oil i am talking about here and wich i am using allready in my car. Posting Nr. 51 Data sheet: https://www.rowe-oil.com/en/product-information/rowe/20310.pdf To make it clear, again: This oil is in the enigne of my car. That is the oil i wich am using. That is what i...

Reading through this forum is sometimes cumbersome. You want to learn soemthing new. Example: You read something like "Dont use Diesel oils in Gasoline engines" and the information there reads sound. And along come a Member and tells you: "No, this Information is wrong , because the author was...

Yes, but i am only Talking about the very few PAO / Fully synthetic 10w- Passenger car oils wich are out here today. Not about these old mineral oils from the 1990s. You can not compare these oils, the performance level is very different.

I serarched with Google, Firefox and Duck Duck go and found absolutely nothing Beside some scientific PDF documents wich i have to pay for. I give up.

So, you are talking only about the base oil thickness of Mobil oils? I was thinking and talking about the general comparsion of Base oil thickness of a PAO 0w- compared to a PAO 10w- and the difference in engine protection at extreme conditons. High heat, High Piston Speed, High RPM.

Where do you get this "Base oil is xxxx cst " numbers? Their are not listed in any tables. I was "informed" (In search for a better word..) that the "MRV cp (at xx C°) ASTM 4684" test tells you how robust (thin or thick) the base oil is. I know that most 10w- PCO oils on the market are made...

And: Sorry to "sfbmw" for derailing your thread! I was at the wrong assumption that you car has this high reving engine, like the ones here. Therfore, i think you are good to go with the Mobil 1.

For my car, the manufacterer specs a 10w-30 year round. 5w-40 only when it really get´s cold. Yes, it makes no sense, but that is Printed in the manual. The engine revs very high and has a insane Piston speed. The engine is known for running hot, with high oil temps. I am totally out of...

Interesting read! - I would not use Dieseloil in Gasoline engiens, as i would not use GL5 SAE 140 in a Manual Transmission. Some oils are tailored to their Purpose. - Oh yes, i did not know the difference of the US Spec M3 vs. the German Spec M3. It never came to my mind that BMW sell this car...