What differential oil to use in '88
 

http://www.thesupraforums.com/images/icons/icon1.gif What differential oil to use in '88
I have an 88 5-speed with a diff making horrible noises when going around turns and a whining noise when accelerating in any gear. The car has just 65,000 original miles and recently had the transmission and differential oil changed. A friend who used to work on Toyotas told me that the noise could be caused by improper oil being used in the differential. The place I took it for service may not have known of any special oil requirements for a car this old and just put a generic grade in.

Any information on what I actually should use and where to get it would be really helpful.

Thanks in advance for any help.

Paul