Transmission oil weight differences?
Road Captain
Joined: Sep 2011
Posts: 541
Likes: 3
From: Sherwood Park AB Canada
I run Amsoil 75w140 in the trans hot and cold as well. Much quieter and shifts nice. I have run the Amsoil in the last 3 bikes for a total of about 100k miles and have never had a trans issue.
Seasoned HDF Member
Joined: Mar 2009
Posts: 24,730
Likes: 9,236
From: Snow Hill, NC
Now that i think of it...I now have formula + in my tranny and Primary ...I have been wanting to try Shockproof but just never got around to doing so...I have 74000 miles and at around 40-50k my IP bearing started leaking...they fived it under warranty and refilled it with Formula + and i changed it again to that...
Road Warrior
Joined: Mar 2011
Posts: 1,456
Likes: 132
From: Deep South, Louisiana
Also transmission/gear oil and engine oil grades are not the same.
Road Master
Joined: Jun 2012
Posts: 1,062
Likes: 191
From: Boise, Idaho
i drank the koolaid too.. I'm sure somewhere down the line I'll be thanking myself for doing it and others like Notgrownup for all their good advice. I'm not running the syn3 stuff in my transmission anymore either based on things I've read (good, bad, indifferent). I switched out to Redline Heavy Shockproof and couldn't be happier. Every once in a while I'll get a whiff of that smelly crap in there but man she shifts like a dream now and very noticeable difference in the infamous "klunk" of the HDs.
+1
I'm running the Redline oil in all 3 boxes and couldn't be happier. I haven't noticed the bad smell though. Shift quality and clutch engagement are greatly improved.
Al
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