2 Best SAE 80W-90 transmission fluids

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Traditional multi-grade gear oil for older transmissions and differentials, offering robust protection. SAE 80W-90 transmission fluid is a multi-grade gear oil commonly used in older manual transmissions and differentials. The '80W' provides good low-temperature fluidity, while the '90' offers robust protection at operating temperatures. This grade is known for its excellent wear protection and load-carrying capacity, making it suitable for heavy-duty applications. It provides good oxidation resistance and thermal stability, ensuring long-term protection of transmission components. SAE 80W-90 is often recommended for older vehicles and heavy equipment where higher viscosity fluids are specified.
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