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This is because a sufficient oil film has already filled the gaps between the engine parts.

GTL + PAO

Is it a mild hybrid engine?

HTHS will no longer be meaningful in modern engines with good thermal management.

Standard Mid-SAPS oils are depleted in TBN after approximately 200 hours of engine operation. It is more accurate to calculate based on engine time rather than mileage.

Do you do a lot of short-distance driving?

The ASTM D2896 test method overestimates acid neutralization power, so the D4739 test method must be used.

You need to check if the TBN test used the ASTM D4739 test method. The D2896 test method overestimates acid neutralization power.

Where does manganese come from?

All 1.6 turbo hybrid vehicles rolling around in Korea have the same problem.

The recommended viscosity for the Smartstream 1.6 turbo engine was 0W20. However, it is now indicated that 0W30 and 5W30 can also be used. I hope this helps someone. 2024 GSW 2026 GSW

There will be no problem up to HTHS 2.6

Is it a mild hybrid engine?

When you used Pennzoil, did you add octane booster to the fuel? High manganese levels could indicate an octane booster.

The sulfate ash content is also calculated to be over 0.9%, exceeding the ACEA C3 standard. The lab tested twice. ICP test results are subject to significant variation and are not absolute values.

Oils rated C3 cannot have such high TBNs. They will likely need to be upgraded to A3/B4.

Spec : API SP, ACEA C3 Manufacture : Shell

Total 36400mi, Oci 4600mi (7458km) City 70%, Highway 30% Engine time : 205 hour It is not my car. Enjoy!

KIA Sportage hybrid 1.6 T-GDI Total 6000 mi, Oil use 3000 mi (152hr) Short commute of 10mi (16 km) round trip, long distance weekend trip. This is 3rd oil change. There is high gasoline dilution.

Do you drive long distances a lot? Hyundai's 1.6 turbo hybrid engine is said to have a high gasoline content in short-distance driving