0w16 for new hybrid
- Thread starter Joe1
- Start date
The oil pump only supplies the oil, it doesn't cause the lubrication based on laws of Tribology - ie, the oil viscosity and the mechanics of moving parts. The MOFT between moving parts is a strong function of the oil viscosiy and the relative speed of the moving parts.
"Programming" the variable volume oil pump is to basically cut back the output volume when less oil is needed to lubricate in order to save a miniscule amount of fuel used for oil pumping.
Last edited:
It’s not an electronic oil pump its a chain driven oil pump and the pressure is controlled with valves by the ECM.
See: Diagram in Lub System
Toyota engines - A25·M20 - Dynamic Force series (R4)
Review of Toyota Dynamic Force engines design and components - inline-4 (M20A, A25A)
toyota-club.net
- Joined
- Jun 8, 2022
- Messages
- 2,465
Australia is upside down so you don't need oil pressure, its gravity feed
In all seriousness with the DI / PI I wonder how often it actually gets port injection - since that is mostly enabled at idle. I suppose a hybrid will idle sometimes, but not often.
I have an ICE version with this engine. Its never gone over 5K between oil changes. Sometimes the dealer does it for free - so who knows what goes in. When I do it - it gets 0w-20 which is also listed as an acceptable alternative for US use. When warranty is over I will likely go to 5w-30.
In Europe, the user manual also pushes us to insist on 0w-16. At the Toyota dealer, they have checked which oils they are allowed to use in a hybrid Camry with A25A-FXS engine. They offered these options:
0w-16, 0w-20, 5w-30 (in my country 5w-20 is almost unheard of/unknown SAE class).
I have decided to go for 0w-20 and severe use OCI interval to be on the safe side.
As the A25A-FXS was recently approved for 0w-8 in the Toyota Crown, I believe that with 0w-20 will be O.K. even on hot summer days going up to 100 mph on the highway.
-
We are not upside down from you, we are just a bit on the side (approx 90 degrees) therefore we really need a good oil pump. We have the steering wheel on the correct side and German highways are not far away ...
0w-16, 0w-20, 5w-30 (in my country 5w-20 is almost unheard of/unknown SAE class).
I have decided to go for 0w-20 and severe use OCI interval to be on the safe side.
As the A25A-FXS was recently approved for 0w-8 in the Toyota Crown, I believe that with 0w-20 will be O.K. even on hot summer days going up to 100 mph on the highway.
-
We are not upside down from you, we are just a bit on the side (approx 90 degrees) therefore we really need a good oil pump. We have the steering wheel on the correct side and German highways are not far away ...
Well now I see on page 493 of the 2023 Highlander Hybrid (2.5L) User Manual:
"SAE 0W-16 is the best choice for good fuel economy and good starting in cold weather.
If SAE 0W-16 is not available, SAE 0W-20 oil may be used. However, it must be replaced with SAE 0W-16 at the next oil change.
Oil viscosity (0W-16 is explained here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds, or under extreme load conditions."
It certainly doesn't say that using 0W-20 will cause any damage, void warranty, etc.
So Petr if you're doing a lot of 100 mph driving then yeah 0W-20 is probably a good idea.
"SAE 0W-16 is the best choice for good fuel economy and good starting in cold weather.
If SAE 0W-16 is not available, SAE 0W-20 oil may be used. However, it must be replaced with SAE 0W-16 at the next oil change.
Oil viscosity (0W-16 is explained here as an example):
• The 0W in 0W-16 indicates the characteristic of the oil which allows cold startability. Oils with a lower value before the W allow for easier starting
of the engine in cold weather.
• The 16 in 0W-16 indicates the viscosity characteristic of the oil when the oil is at high temperature. An oil with a higher viscosity (one with a higher value) may be better suited if the vehicle is operated at high speeds, or under extreme load conditions."
It certainly doesn't say that using 0W-20 will cause any damage, void warranty, etc.
So Petr if you're doing a lot of 100 mph driving then yeah 0W-20 is probably a good idea.
