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post #1 of 33 (permalink) Old 01-12-2019, 08:49 AM Thread Starter
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Transmission fluid opinion

I am currently running Amsoil 75w-110 full synthetic in the trans, I see that my dealer now carries V-twin full synthetic 110, wondering if that would be kinda on the thick side for the early spring and fall up hear in the North east, anyone running straight 110 synthetic?

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post #2 of 33 (permalink) Old 01-12-2019, 09:06 AM
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Trans oil viscosity ratings are different than motor oil , it is lighter ( thinner ) .. IOW a 75w viscosity trans oil is not as think as a 75w motor oil . I wouldn't worry about it . .. And do use a multi viscosity ..
I have used the Harley oil , Redline and Belray , actually like BelRay the best myself .. But thats neither here nor there ..
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post #3 of 33 (permalink) Old 01-12-2019, 09:26 AM Thread Starter
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Was just wondering because it seems to be popular at my local dealership, might give it a shot.

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post #4 of 33 (permalink) Old 01-12-2019, 10:03 AM
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I use Amsoil 75-140 in the transmission and it works great. Been using it almost since owning the bike. I will use it again when it's time to change it.
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post #5 of 33 (permalink) Old 01-12-2019, 12:05 PM
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If you can run Syn3 in a cruise drive, you can run just about anything in there.

Personally on the older ones I like Redline with Shockproof. On the M8's I'm inclined to stick with the Formula+ it came with. Since there is a chance that some of it could end up in the primary.
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post #6 of 33 (permalink) Old 01-12-2019, 12:06 PM
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I also use BelRay Big Twin Transmission Oil in My 2012 Custom and really like it. I changed from Redline Shock Proof and am very pleased.
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post #7 of 33 (permalink) Old 01-12-2019, 04:35 PM
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Also run 75w-140 Gear oil in all my Harleys. The moving parts are gears sooooo.
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post #8 of 33 (permalink) Old 01-12-2019, 07:51 PM
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I run the AMSOIL V-Twin Transmission Fluid in mine, it works great!


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post #9 of 33 (permalink) Old 01-13-2019, 12:06 PM
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I've used 75 w 140 full synthetic gear lube in the trans either Mobil 1 or Valvoline in my 08 since the bike was new and I haven't had any transmission problems yet and the bike has over 100,000 miles.
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post #10 of 33 (permalink) Old 01-13-2019, 12:15 PM
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I run 75w140 Mobil 1 synthetic in all of our own bikes.


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