Q: Differential fill plug can't be removed - 1984 Chevrolet K20

asked by on September 15, 2016

I have tried and tried, but can not remove the differential fill plug. I even used a torch to heat it and I also tried pouring various kinds of penetrating fluid on it. Nothing works. Almost all of the fluid in the pinion seal has leaked out, plus the rear end has been squealing when I just lightly touch the throttle. Is there a way to fill this without removing the differential fill plug?

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