This is topic what weight gear oil should I run in forum Tech Talk at Northern California Ford Owners  .


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Posted by 50 Deep (Member # 6216) on :
 
I'm getting my rear end done soon in the cobra but I'm not sure what weight gear oil I should use. I kno Ima order the royal purple brand but not sure what weight it runs stock or what's optimal for our weather and daily street driving
 
Posted by JohnB (Member # 969) on :
 
75-85w140.
 
Posted by 50 Deep (Member # 6216) on :
 
quote:
Originally posted by JohnB:
75-85w140.
Ordered. Comin for u soon john
 
Posted by 1fast281 (Member # 4670) on :
 
I like the new Amsoil SVG 75-110 it's a good compromise between the 75w-90 and the 75w-140.
 
Posted by 50 Deep (Member # 6216) on :
 
So is the rating for gear oil the same as regular oil. Where the first nu,ber is how cold of a temp it can operate in and the second is the higher temp range?
 
Posted by RiverCityAuto (Member # 7664) on :
 
the first number in an oil rating is the viscosity at freezing temp, the lower the number=the thinner the oil. The second number represents the viscosity level at normal operating temperature. Gear oil is rated the same but just has lots of additives
 




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