Amsoil 4T Performance 10w40 - Did the Specs Actually Get Worse
Автор: Axle Dynamics
Загружено: 2026-02-05
Просмотров: 659
Описание:
Amsoil 4T Performance 10W-40 is considered one of the best motorcycle oils in the world. But when you compare the 2017 datasheet vs the 2025 formula, the numbers tell a confusing story.
TBN dropped.
HTHS dropped.
Viscosity dropped.
So is Amsoil downgrading its oil… or adapting to modern engines and emission standards?
In this video, I break down the real reason behind Mid-SAPS oils, emission regulations, catalytic converter protection, and why a “weaker” oil on paper might actually be smarter for modern FI bikes - but potentially less ideal for older, air-cooled engines in hot climates like Bangladesh.
No marketing fluff here. The whole video is data, chemistry, and real-world logic.
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