just saw this on an oil testing site -
In “Hybrid vehicles”, depending on the conditions when the vehicle is underway, the engine is sometimes running, and sometimes not running. And they usually also employ an “engine-off” feature when the vehicle comes to a stop. All this on-again/off-again engine operation creates a severe/extreme usage condition for the engine’s motor oil. That is because the oil cannot maintain a high enough temperature to keep normal condensation removed, which comes from the constant over, and over, and over, partial heating and then re-cooling of the oil. This is a textbook example of short trip operation on the motor oil, which, as mentioned above, is one of the worst things you can subject a motor oil to. As a result, in order to provide a Hybrid vehicle’s engine with the best possible wear protection, its motor oil should be changed much more frequently, such as at every 3,000 miles, because of this severe/extreme usage. So, it is in your best interest to ignore the ridiculously long oil change interval in the Owner’s Manual or the dash’s oil change indicator.
heres the link
https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/
looks like for 0w20 oils the best was --
The HIGHER the psi value, the BETTER the Wear Protection.
1. 0W20 Quaker State Ultimate Durability, API SN, synthetic (gold bottle) = 124,393 psi
Its onset of Thermal Breakdown = 270*F
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2. 0W20 Toyota Motor Oil, API SN, synthetic = 101,460 psi
Its onset of Thermal Breakdown = 255*F
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3. 0W20 Mobil 1 Extended Performance, API SN, dexos 1 approved, synthetic = 100,229 psi
Its onset of Thermal Breakdown = 265*F
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4. 0W20 Pennzoil Platinum, Pure Plus Technology, made from Natural Gas, API SN, synthetic
(silver bottle with blue vertical stripe on the label) = 92,504 psi
It’s onset of Thermal Breakdown = 275*F
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5. 0W20 Castrol Edge, Fluid Titanium Technology, API SN, dexos 1 approved, synthetic
(black bottle) = 90,745 psi
It’s onset of Thermal Breakdown = 270*F
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6. 0W20 Valvoline SynPower, API SN, synthetic = 89,556 psi
It’s onset of Thermal Breakdown = 270*F
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7. 0W20 Mobil 1 Advance Fuel Economy, API SN, dexos 1 approved, synthetic = 79,612 psi
It’s onset of Thermal Breakdown = 270*F
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8. 0W20 Kendall GT-1, with liquid Titanium, API SN, synthetic = 71,385 psi
It’s onset of Thermal Breakdown = 260*F
not on the list was 0W20 Amsoil Signature Series, synthetic = 134,840 psi
The bottle does not have an API symbol, but it claims the oil can be used in applications that require API SN,