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Discussion in '40- & 55-Series Tech' started by vagabond, Oct 2, 2006.
With all the improvements on oil, what could be acceptable to use rather than 90 in my '75?
Use 80w-90 GL5. It's available everywhere.
What are you trying to gain by not running 80W-90 gear oil in your old truck?
I would try some things that look like gear oil and see how far you get, and what you learn. Some suggestions:
Used motor oil
Maple syrup (winter only)
we use a 75-90W mobil synthetic gear oil in some expensive gearboxes here, and it seems to drop oil temperature about 30 degrees, makes the gearboxes survive instead of dying once a year. problem is it's $8 a bottle. but you might find a better price on it somewhere
I run Amsoil 75-90 synthetic, and love it!!!
thank you all for your input.
Glad to hear of your recommendations!
use Redline shockproof- choose the viscosity to suit your driving style - this stuff also works well with water in it - for some reason it doesnt break down the way std oils do.
I get Mobil Synthetic Gear Lube in the $5 bucket. $99.
Mobil 1 is more expensive. Supposedly it's the same stuff plus some limited slip additives. Since I don't have a limited slip, I don't use it.
royal purple, great stuff but pricey