Community Q&A Question: gear oil weight

Asking About: Royal Purple Max-Gear Gear Oil & Friction Modifier Kit 75w90


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gear oil weight

What is the difference between 75 90 and 85w140?
from westminster |
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5
Accepted Answer
For hot weather applications and applications with heavy shock load (drag racing) the 85w140 would be a good choice. Ford specified 75w140 gear oil for Mustangs starting in 1999. 75w90 is a great all around gear oil and is typically used where a compromise of shock load handling and fuel economy are of a concern.
from Hewitt |
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