Thread: Steering Box Question?

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There's not much mystery to 600w, and equivalent oils are still available (steam cylinder oils), though you usually have to go through a re-packager to get quantities less than 5 gallon. That being said, Pop's 85/140 gear oil is similar in viscosity, though the additive composition is different. Multi-purpose gear oil that carries an 85/140 grade typically has sulphur-phosphorous (stinky stuff) that can attack some yellow metals (e.g. certain brass).

Greases are lube oils with thickener added (lithium, calcium, sodium etc......soap compounds), typically 10% thickener, 90%oil and additives. Main reason to use a grease is if the sealing of the compartment is weak. If you've got good seals the grease doesn't do anything better than oil because it's the oil in grease that does the lubricating, not the thickener.

You'll go nuts (a shorter trip for some than others ) reading people's beliefs online about what's "correct" (lots of home brew concoctions), especially when they don't (won't?) comprehend the above info.