Is oil on the wheel hub a sign of brake fluid leakage?

1 Answers
LailaAnn
07/30/25 1:18am
Reasons for oil stains on the wheel hub: 1. Loose sealing nut: If the fixing nut is not tightened properly or is too tight, it can cause oil leakage. Always check the nut if oil leakage is detected. Especially, if the oil drain plug on the oil pan is not tightened, it can easily lead to oil loss, potentially causing severe engine damage such as "bearing seizure." 2. Aging or cracking of the sealing oil seal: The oil seal is a mechanical component used to contain oil. If the oil seal is not installed correctly, causing misalignment between the shaft neck and the oil seal edge, oil leakage can occur. 3. Wheel hub oil splatter: Excessive lubrication grease (butter) in the wheel hub can lead to excessively high bearing temperatures, resulting in oil splatter during vehicle operation.
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