4 Best SAE 5W-40 transmission fluids

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Wide-range multi-grade fluid for extreme temperature variations, balancing cold-start and high-load performance. SAE 5W-40 transmission fluid is a multi-grade lubricant that offers excellent low-temperature fluidity and superior high-temperature stability. The '5W' ensures exceptional cold-start performance, while the '40' provides robust protection at high operating temperatures. This grade is ideal for vehicles operating in extreme temperature variations or under high loads. It offers excellent wear protection, oxidation resistance, and thermal stability, making it suitable for high-performance vehicles, diesel engines, and some heavy-duty applications that require a wide operating temperature range.
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