Re: rear axle help
Hey welcome to the best boards around from MT glad you like it here  What kind of truck do you have is it posi or just a limited slip setup? If its posi you will need to buy an additive for it. If not you just need a couple quarts of 80-90wt gear oil for it atleast 3 if I remember correctly. Pull all your diff bolts out and pry the cover off. Scrape all the old gasket off and take brake cleaner or the like and spray your rear diff out real good. You can buy a gasket or just use silicone gasket maker on it. There should be a check plug that you put a ratchet in and undo to fill it back up and check it to make sure its full. Then your good to go.
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*HOODS is what I answer too* -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold
-'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit 
-'86 K5 Blazer Silverado 6.2 4" lift 35"s
-'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's
-'83 Monte Carlo T-Tops. 126,500 Original Miles
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