Eneos 0w8

[Bill7]

Should I run the Eneos X Prime 0W-8 JASO GLV-1 in my Toyota Prius Prime? It is probably still thicker than the ultra-high-VI TGMO 0W-20 SN—the thinnest oil ever—which I proudly ran in my 1985 Toyota Corolla LE (RIP) for many OCIs.

https://www.eneos.us/product/eneos-0w-8/

You might want to ask yourself this question:
If you were looking to buy a used car on Craigslist with 100,000 miles on it (Ex: Toyota Prius), and you go to see the car, and the owner says he used 0W-8 on it since new, would you still want to buy the car. In my case, it would be a blocker and I would pass on the car.

On Japanese roads, not sure if many cars are driven at sustained speeds of 70 to 75 MPH,
where many engines are at a higher RPM for a long time, especially when having to downshift when going up long inclines.
So, saying 0W-8 has been tested on Japanese roads has caveots.

Even 0W-16 at 10k oil change intervals like Toyota recommends in most of it's new cars is scary, as it will sheer down to a much thinner oil after 4k miles, and after 10k miles, it could even become a 0W-4. I don't think I'll ever buy any used Toyotas with years 2018 or newer, due to the 0W-16 oil likely being used in it by the previous owner. Just my opinion. You might be totally right that 0W-8 is a great oil, and I respect your opinion.
But in my case, all of the cars I will ever own will only see 5w30.

 

[GR_CoB]

Anyone else misses Eneos Sustina 0w50? or is it just me...

 

[PimTac]

Anyone else misses Eneos Sustina 0w50? or is it just me...

Sustina was discontinued a while back but you can buy their Racing Street oil in the same grade.

 

[Gokhan]

You might want to ask yourself this question:
If you were looking to buy a used car on Craigslist with 100,000 miles on it (Ex: Toyota Prius), and you go to see the car, and the owner says he used 0W-8 on it since new, would you still want to buy the car. In my case, it would be a blocker and I would pass on the car.

On Japanese roads, not sure if many cars are driven at sustained speeds of 70 to 75 MPH,
where many engines are at a higher RPM for a long time, especially when having to downshift when going up long inclines.
So, saying 0W-8 has been tested on Japanese roads has caveots.

Even 0W-16 at 10k oil change intervals like Toyota recommends in most of it's new cars is scary, as it will sheer down to a much thinner oil after 4k miles, and after 10k miles, it could even become a 0W-4. I don't think I'll ever buy any used Toyotas with years 2018 or newer, due to the 0W-16 oil likely being used in it by the previous owner. Just my opinion. You might be totally right that 0W-8 is a great oil, and I respect your opinion.
But in my case, all of the cars I will ever own will only see 5w30.

Regarding shear, check my table. An oil cannot shear to below the high-temperature, full-shear viscosity HTFS. A SAE 0W-8 could be VII-free (HTFS = HTHS), and there is no such thing as a SAE 0W-4. There are probably SAE 0W-16 oils out there that are thicker than some 5w30 oils. In the past, even SAE 5w30 was considered to be too thin, and the OEMs only recommended SAE 10w30 or 10W-40. So, blanket statements saying a 0W-20 or 0W-16 won't provide sufficient protection against wear are false.

https://bobistheoilguy.com/forums/threads/htfsv-high-temperature-full-shear-viscosity.307409/

 

[yowps3]

In the manual, it says for maximum fuel efficiency use 0w20, if tracking the car or extreme temps, you can use an oil suited for the climate.



0w20 is the primary specified grade. Tracking the vehicle under extreme temps

 

[yowps3]

In the manual, it says for maximum fuel efficiency use 0w20, if tracking the car or extreme temps, you can use an oil suited for the climate.

Yes