What type of oil for ford 8n rear end

Once the sump is flushed and cleaned to remove built-up dirt, the process no longer needs to be repeated with any regularity when using a 10-30 multi-grade oil. Transmission Fluid For its 8N, Ford specified mild EP gear conforming to Ford specs M4864A (SAE 80) for temperatures below freezing and M4864B (SAE 90) for temperatures above freezing.

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