Picked bike up this afternoon. A day and 3/4 for a 2.5 hour job and with an appointment. Gotta love that service. Anyway, here is what I was told. The dealership will NOT put any lube in not recommended by HD. Therefore, Syn3 is it. Asked if this was only for warranty work and was told; "No, even on an oil change they will not put in Mobil 1 or any other product I might bring in." Tried to get them to say whether this was a HD policy or theirs alone. They hinted it was from HD but would not want me to use their name if I complained to HD about it. Not sure how far to press. Will just do it myself or take elsewhere if that is the attitude. Would be interesting to know if other dealers are doing the same thing. We already have at least one comment that a dealer has heard of no such edict.
BTW-Glad I had the extended warranty. Since the ride is over 2 years new I was charged the $50 deductible for warranty work vice the total of $204 for the complete job.
Well, that one pegs the Bull$h!t-o-meter!

When I took my bike to Bumpus' in Memphis for the cams/oil pump/pipes upgrade, I also took Mobil 1 V-Twin for them to put in the crankcase, which they did without any issue. That said the dealer here in Peoria won't install parts that you don't buy from them, or presumably, oil that you bring in. So, I just take it to someone who will. [smiley=nixweiss.gif]
Re: the extended warranty, I've used mine twice in the last 1,300 miles, or so.