When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The 07 take the same oil in all three. Someone was saying that Harley "cooled on that idea". Where is that printed? Anyone...
I'm just going by what my 06 Ultra Classic owners manual and shop manual say. I double checked and both recommend Formula+Primary and Trans lube in the Primary and Transmission. I ran the Synth3 in every thing in my 05 Classic and traded it in with nearly 30K miles on the clock. No problems at all. When I traded for the 06, I asked two different Harley mechanics that I know at two different dealers. Both said the same thing, the Synth3 is fine for the motor and primary and probably OK for the tranny, but people that plan to keep their bikes a long time would be better off with a heavier trans lube. One of these guys used HD dino oil, and the old gear lube and primary lube, the other used Synth3 in the motor and the new Formula+ in his primary and transmission. I'm not saying that the Synth3 isn't OK for everything, HD can't very well deny warranty or anything like that since they recommend it, but my owners manual tells me different.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
RE: Preferred Oil
