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Big Ten Fluid


sierradriver

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How much gear lube goes into bgb and rear end assembly on my big ten? Do I fill from top until it comes out first plug hole? Thanks for the help
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Yes, thats how I do it... fill from top plug on R.side of trans until its up to level of Fill Plug (on R.side about 1/4 way up from bottom)(some have a 45-street ell with a plug) Same w/BGB; fill from "vent plug" on top till its up to level of Fill Plug (on back of BGB 1/4 way up from bottom)
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Andy, Are you filling it with SAE 90 as per manufacturers instructions? If so, where did you find straight 90 weight? I went to a few local auto parts store here in southern New Hampshire and no one seems to carry straight 90 weight oil. -Mike
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I think your better off using the "multi-viscosity" gear lube like 80w90(I use synthetics)..Its a bit thinner/better in cold weather. For jobs like snowblowing, etc... I've even seen 75w140, but the bigger the visc. swing the more additives needed..... 2cworth
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I think I read that the later models took Simplicity Multi fluid. I also believe that is type f or atf. I spoke to the local dealer here and he thought that any good grade of oil would work. I am running sae 30 in two that I just rebuilt and have had no trouble. The late model and early one are the same inside. With that said I am running 75-90 in my 7116 for a couple of years with out trouble also.
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