0W-20 or 5W-30 for a Plug-in Hybrid (Subaru)

[Sienna dude]

True that. But on the other hand I haven't been prone to making such statements here in technical discussions nor in any other claims. I'd have been called out years ago if that was the case. So there's that.

Ha! I am going to work now. I am not fortunate enough to have as much time on my hands as yourself.
Keep the thread alive folks

 

[oil pan 4]

I want to know what you are on that gives you so much confidence? No sir/ma'am/whatever, most 20wt oils are not around 9 cSt.

Most of the off the shelf oil is. If you want a 20wt that's a real 20wt and not almost a 30wt you have to hunt for them or get your oil changed at the Toyota dealership.
Similar to a 12cSt 30wt, they're out there, you have to hunt for them.
It's almost like motor oil engineers have known for nearly a hundred years that most piston engines need oil that's around 10cSt at operating temperature.

 

[oil pan 4]

Another "unsubstantiated Internet post"

Yeah he accused me of not doing oil testing. The next post was oil tests going back to 2019.....

 

[Jimmy_Russells]

Most of the off the shelf oil is. If you want a 20wt that's a real 20wt and not almost a 30wt you have to hunt for them or get your oil changed at the Toyota dealership.
Similar to a 12cSt 30wt, they're out there, you have to hunt for them.
It's almost like motor oil engineers have known for nearly a hundred years that most piston engines need oil that's around 10cSt at operating temperature.

Most of them are low to mid 8s and drop into mid to high 7s after a few hundred miles.

30 grades around 12 are easy to find - Euro formulas.

 

[Sienna dude]

Most of the off the shelf oil is. If you want a 20wt that's a real 20wt and not almost a 30wt you have to hunt for them or get your oil changed at the Toyota dealership.
Similar to a 12cSt 30wt, they're out there, you have to hunt for them.
It's almost like motor oil engineers have known for nearly a hundred years that most piston engines need oil that's around 10cSt at operating temperature.

Let's see. Mobil 1, Pennzoil, and Valvoline each have just a single 8.8 in their entire 0w20 lineup. That's not "Most". And even those show up as 8.5 on a VOA(Not Blackstone). Good luck explaining to a dealer represenative with IQ of room temperature why your Pennzoil Platinum 0w20 is showing 9.1 after 5000 miles on it in a UOA, if they decide to go with a UOA. Show me a UOA, and I can acurately guess what viscosity it is. You can never fool me with a 5w30, it is very obvious when you see the whole UOA.
Anyways, I am not replaying to this anymore, this thread is not going anywhere, just a bunch of misinformation here.

 

[kschachn]

Anyways, I am not replaying to this anymore, this thread is not going anywhere, just a bunch of misinformation here.

Agree on that.

 

[Nessism1]

I worked in the service engineering department of a Japanese OEM, and I never one time heard of anyone challenging a customer regarding an engine failure warranty claim based on what oil was used. NEVER. EVER. I also know various friends working for other OEM's, and similar. It's not a question that's asked. Engines don't fail because of what oil was used. Running an engine out of oil? yes. Not changing the oil? Yes. And even with egregious customer failures in these regards, the OEM typically picks up the warranty claim regardless.

 

[oil pan 4]

Let's see. Mobil 1, Pennzoil, and Valvoline each have just a single 8.8 in their entire 0w20 lineup. That's not "Most". And even those show up as 8.5 on a VOA(Not Blackstone). Good luck explaining to a dealer represenative with IQ of room temperature why your Pennzoil Platinum 0w20 is showing 9.1 after 5000 miles on it in a UOA, if they decide to go with a UOA. Show me a UOA, and I can acurately guess what viscosity it is. You can never fool me with a 5w30, it is very obvious when you see the whole UOA.
Anyways, I am not replaying to this anymore, this thread is not going anywhere, just a bunch of misinformation here.

K

 

[DirectRejection]

We got people pulling up manuals, discussing the nuances of warranties and language around grades and viscosity, and doing a bunch of extracurricular research… Meanwhile she is probably playing on TikTok right now sitting in the Jiffy Lube waiting room while her oils get changed with not a care in the world.

Jiffy Lube changed their policy on me.

They used to be willing to put my HPL PP 0W8 in my Corolla Cross Hybrid, so long as I signed a waiver.

Now they are suddenly saying only spec'd 0W16 is allowed by corporate.

I tried showing them my BITOG threads to no avail.

 

[kschachn]

Jiffy Lube changed their policy on me.

They used to be willing to put my HPL PP 0W8 in my Corolla Cross Hybrid, so long as I signed a waiver.

Now they are suddenly saying only spec'd 0W16 is allowed by corporate.

I tried showing them my BITOG threads to no avail.

I know you like to troll about this, but for them to use a grade lower than recommended would be irresponsible and potentially damaging to the vehicle.

At least they have that much sense.

 

[DirectRejection]

I know you like to troll about this, but for them to use a grade lower than recommended would be irresponsible and potentially damaging to the vehicle.

At least they have that much sense.

There is not so much as a hint of trolling on my part herein.

Jiffy Lube's purported liability would be in play the first time they changed my oil.

The manager did inform me that Jiffy Lube now stocks Pennzoil Platinum in the 0W8 flavor.

Yaris Cross Hybrid, Crown, and now Camry spec 0W8 but not Corolla Hatchback GR (spec = 0W20).

These are all D-4S engines, with high efficiency and engineering designed to be simpatico with very thin oils.