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I'm going to move to gear lube in the tranny to try and reduce the clattering noise in 5th gear. I'm leaning towards Bel Ray Big Twin Transmission Transmission Oil (hypoid gear lube), Bel Ray Big Twin Chaincase lube, and Bel Ray Big Twin Motor oil. If you run this, what is your experience?
If you run something different (Amsoil, Redline, Mobil 1, Spectro, etc) could you rate how it impacted the noise? Mention the oil and on a scale of 1 - 5, 1 is no help, 5 is quieted down completely. I'll let this thread run a couple of days and then tally the results.
Bro go to the "oil and oil related topics post" and you'll probably get more responses.. but anyway I've got a 06 FLHXI and it shifts better (3) and the clutch seems less grabby(3).I went from syn 3 to Mobil 1 V-twin in the crank and primary, and Mobil 1 75/90 in the trans.
I'd say it reduced noise of 5th by about 40-50% (seems it was louder when RPMs were actually lower but quieter when rpms were up in 5th).
If you want to really reduce noise of 5th gear (which didn't bother me to begin with) ..... get some nice pipes.
after putting on my exhaust ..... can't hear 5th at all. Just a nice low frequency from the pipes.
Also ... over time it seems to quiet down on its own a bit.
Noise when new was almost obnoxious. After about 500miles it wasn't so bad. I had them put in the Severe Gear at the 1k maintenance. By the time the 1k maintenance happened ... either the noise had already started to quiet down or I was simply ignoring it and just not hearing it much.
I have 5600 miles on my 07 ultra now ... and really with the exhaust changes I can't hear the frequency of 5th gear anymore.
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