But is it GL-4? Think of the innocent bushings... :blink:
True: Happiness is warm oil.I understand that it's wise to preheat this gear oil (microwave or stovetop) before pouring it into the hole.
+1 on the Mobil 1 Syn 75w90what kind of differental oil are you guys using ? Yamaha dealer dosent carry yamalube or whatever the book calls for..
cant be much different than what honda or bmw use is it?
how about mobil 1 synthetic? what weight do you think the Yamaha oil is ?
You are about to be repremanded, and given a "link" to answer your question, but before that hapens: ( I'm the nice one here )
I use Mobil 1 synthetic 75w90
Have a nice day, and log out before you get offended by the next guy.
Too late, they're here
Nope, GL4 80W is the Yamaha spec. GL5 can damage some types of bronze bushings over time due to the sulpher (EP)content I believe. Many folks say " I've been using (pick your favorite) gear oil for X miles now and I've had no troubles". GL5 may be OK, but unless a diff is removed dissembled and methodically measured for tolerances and wear who knows if GL5 is OK. It (GL5) predominantly was a problem in older manual gearboxes that specified a gear oil that existed before the widely available GL5 oil. Folks changed to GL5 and the syncros would be damaged and prematurely wear out.It needs to be GL5 80/90
I understand that it's wise to preheat this gear oil (microwave or stovetop) before pouring it into the hole.Pouring cold lubricant on your gears can cause them to shrink,
and never again properly mesh.
(On straight-cut gears, it's especially critical, ...I think.)
Seriously. :drag:
Damn, I have the hardest time with tongue in cheek posts! Guess I'm just a little slooooow and guillible these days. Must be the water.Alakso,
Look closely and you'll see Old Micheal's tongue was firmly in his cheek.
I dont see a problem with the guestion at all. I enjoyed reading the replys. If theres a post that bothers someone they should ignore it and just move on.
Actually..., the viscosities of, say, SAE 40 motor oil and, say, SAE 80 gear oil are very similar (about the same -- different measuring scales...).God, these are great. Use good gear oil. Period. It's two gears meshing in there.Don't use engine oil. It's still too light.
Use gear oil. Exact viscosity is totally irrelavant.
This is even easier than engine oil. In the engine, don't use "Energy Conserving." Anything else goes. In the drive, use gear oil. If it says gear oil, it's for gears. The final drive has gears. That'll work.
As has been stated, availability is the biggest issue.Anyway, I work for a manufacturer and there are many reasons to stick with the recommended lubricates and OEM parts. I believe in it without question. If nothing else it makes no sense to me to spend $10K on a bike and then try to save $5 on engine oil or diff oil in this case.
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