[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

5W-40粘度对高温高负荷(涡轮增压、激烈驾驶)工况保护性强,但相比0W-30/5W-30等低粘度机油,冷启动油膜建立稍慢、理论燃油经济性略低,追求节油的自然吸气家用车不是最优选。

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85%
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Long-term
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