using synthetic fluids in trans, tc & diffs (1 Viewer)

Joined
Jan 20, 2003
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Wherever the truck stops!!
 
 
I think it is but it depends how much deep water you go through (deep water enough to flood the axles etc. requires a fluid change which gets expensive with synthetic).
I use Mobil 1 but I've used other brands too like Shell. I think the truck rolls easier with the synthetic gear oil.
 
Joined
Apr 15, 2004
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2,863
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Larkspur, CO
 
Good synthetics (Mobil1, Amsoil) are way better than dinosaur oil, especially in extreme temps. They make a huge difference in diffs that are subject to high loads.
 
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