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Discussion Starter #1
I have a 91 GMC Sonoma with the 2.8L and 5 Speed Manual Trans... What fluid do I fill the manual trans fluid with? ATF or 80 Weight?

Please help me quick...The truck is on the hoist waiting for fluid... :D
 

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Discussion Starter #4
Yup, it turned out to be ATF... I finally decided just to pull the plug and see for myself as I had both ATF and 80 weight just laying around...
 
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