My 2 cents is that the thicker oils, gear oil mostly, is the biggest culprit (besides the gas).
My mechanic buddy (19 years as a mechanic) said he`s pulled diff covers off vehicles that had been driven and warmed up.... and the fluid inside rolled out like molasses.
Full synthetic gear oil is a must.... again - my opinion.
I also run semi-synthetic engine oil but I think I may switch to full synthetic pretty soon.
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Suck it up... it's only -40
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2008 FJ Trail Teams
ARB Front Bumper
ARB Rock Rails
ARB Full Roof Rack W/ Grid
2x IPF lights on bumper
Old Man Emu Heavy Shocks
TRD performance exhaust
Warn M9000 winch
48" hi-lift extreme jack
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