1989 ix rear diff oil question

[2002jm]

Hi: Just bought an 89ix auto and need to change the fluids. Went to the auto stores and they all seem to only have 80-90 gl5. I read that the rear diff takes 90wt gl5. Will the 80-90 make any difference. This is not an autox car or going to be raced:)
thanks,
jm

[spdracrm3]

It'll work just fine

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[2002jm]

thanks

Thanks for the reply, just wanted to be sure before I change out the diff oil in the morning!:)
thanks,
jm