Hey, I have a 1977 truck with 5 speed manual transmission in it. The fluid called for is castrol hyphoy, which im pretty sure they dont even make anymore. what's an equivalent fluid that I can run in it?

 

90 weight gear oil should be fine

 

mmmm u mean Hypoid?
Gear oil single or multi should be fine.

 

manual actually says "hypoy" But thanks for the info! I should have some very pretty pictures of the motor and trans post rebuild in a couple days. =)

 

Let me google that for you

 

thanks for the snark. however, reading my original post again indicates that I was not looking for where I could buy hypoy, but what the equivalent was, since, again, nobody around here sells it.

 

Served IT lol

 

Yeah I guess I remember being 12 too....