Quote:
Originally Posted by RichardM912
An SAE50 engine oil and an SAE90 gear oil have very similar viscosities, of the order of 18 cSt at 100C. There are two separate SAE viscosity classifications (J300 for engine oils, J306 for gear oils).
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Wow, really? Not being sarcastic--I am truly surprised. When I poured Swepco into my transmission a couple months ago, that stuff was so thick, little strings of fluid (think melted cheese from a pizza) would trail off from the bottle mouth when I stopped pouring. That's gotta be way more viscous than regular motor oil, I thought.
As an aside, where do you guys dispose of used gear oil? The local auto parts stores won't take it (citing its blue color). The local lube shops (Jiffy Lube/EZ Lube) won't take it.