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Good question. I'm about to do my 15k service & the bike (bought it used last year) has always been run on Syn 3 in all 3 holes.
Giving some serious thought to at least beefing up the tranny oil weight for the summer. Any suggestions would be appreciated (at least on my part) - there are lots of suggestions in prior posts and it's a bit confusing sorting all through it.
just because you Can does not make it a good idea.
HD is NOT a Honda the transmission is a true gear box.
Question would you put gear lube in your engine NO
Then why would you put oil in your gear box.
Read up on the lube thread lot of good ways to go there are a lot of good 100% true sny out there to meet your needs
SNY3 is at best an ok oil not a true sny
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