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post #1 of 20 (permalink) Old 05-05-2019, 09:21 AM Thread Starter
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Transmission Oil Smells weird

2019 RGS at 1,500 miles with new motor at 500 miles on it. So I've been checking my fluids every ride and ride I pretty hard when i ride. But the trans oil has a funny smell to it and it looks clear as can be on the dip stick. All 3-holes have SYN3 recommended from MOCO tech do to the new motor. Maybe when they did the 1,000 mile service that had the break in oil and switched to SYN3 it puts out a different smell until the next oil change.

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post #2 of 20 (permalink) Old 05-05-2019, 09:26 AM
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There are lots of things to sniff out there, I wouldn't be picking my trans oil to be at the top of the list. There's all kinds of recreational sniff stuff available.... LOL


Does it smell like sulpher? Gear oils tend to smell like rotten eggs, at least a bit. If that's the case, you're fine. They certainly didn't use Syn3.
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post #3 of 20 (permalink) Old 05-05-2019, 09:36 AM Thread Starter
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There are lots of things to sniff out there, I wouldn't be picking my trans oil to be at the top of the list. There's all kinds of recreational sniff stuff available.... LOL


Does it smell like sulpher? Gear oils tend to smell like rotten eggs, at least a bit. If that's the case, you're fine. They certainly didn't use Syn3.
I think you hit the nail right on the head.. I was gonna say it smelled like a lite hint of
curry,but didn't want to offend anyone.. The tech told me they ran all 3-holes with SYN3 and he gave me a half of quart left over.

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post #4 of 20 (permalink) Old 05-05-2019, 12:00 PM
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It might not smell like the syn 3 left in the bottle, since it will be mixed with a little of the original gear oil.

Now here's the thing, syn 3 is not what the MoCo recommends for that gear box. If you look in the manuals they recommend Formula+, which is gear oil. syn three can pass the tests they rate gear oil under, but it con not have the additional high pressure additives such as zinc. I would would spend $10, drain the motor oil out and put gear oil back in. Either formula+ or synthetic gear oil from Wally's.


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post #5 of 20 (permalink) Old 05-05-2019, 12:23 PM
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I think you hit the nail right on the head.. I was gonna say it smelled like a lite hint of
curry,but didn't want to offend anyone.. The tech told me they ran all 3-holes with SYN3 and he gave me a half of quart left over.
Curry? LOL. That sounds more like the Royal Enfields lol
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post #6 of 20 (permalink) Old 05-05-2019, 02:34 PM
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Curry? LOL. That sounds more like the Royal Enfields lol
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post #7 of 20 (permalink) Old 05-05-2019, 03:40 PM
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Curry? LOL. That sounds more like the Royal Enfields lol
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post #8 of 20 (permalink) Old 05-05-2019, 03:52 PM
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It might not smell like the syn 3 left in the bottle, since it will be mixed with a little of the original gear oil.

Now here's the thing, syn 3 is not what the MoCo recommends for that gear box. If you look in the manuals they recommend Formula+, which is gear oil. syn three can pass the tests they rate gear oil under, but it con not have the additional high pressure additives such as zinc. I would would spend $10, drain the motor oil out and put gear oil back in. Either formula+ or synthetic gear oil from Wally's.
And I am told that you do not want to mix syn3 and formula+.
I blieve they come the factory with formula.
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post #9 of 20 (permalink) Old 05-05-2019, 05:24 PM
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And I am told that you do not want to mix syn3 and formula+.
I blieve they come the factory with formula.
They come with Formula+. but it may have something added to it as far as break in goes. I've seen a lot of 1000 mile service oil reports that show copper in the trans oil, and there is no yellow metal in the trans that I know of. But copper sphericals are popular for breaking in anything that uses oil as lube, and does not have a cat down stream.
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post #10 of 20 (permalink) Old 05-05-2019, 07:48 PM Thread Starter
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Originally Posted by Thermodyne View Post
It might not smell like the syn 3 left in the bottle, since it will be mixed with a little of the original gear oil.

Now here's the thing, syn 3 is not what the MoCo recommends for that gear box. If you look in the manuals they recommend Formula+, which is gear oil. syn three can pass the tests they rate gear oil under, but it con not have the additional high pressure additives such as zinc. I would would spend $10, drain the motor oil out and put gear oil back in. Either formula+ or synthetic gear oil from Wally's.
Sounds like I may have miss understood the tech, but i will call tomorrow and make sure. If he did use SYN3 then i will dump it and run gear oil for the gear box. Thank you for the info

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