If you use the same weight as The original oil, for example now the engine uses 15W-40, and you do an oil change, filling it with the same specs 15W-40 oil that's no problem for the engine.
One can purchase a replacement battery for their Harley Davidson motorcycle at their local Harley Davidson store, online or a private shop that specializes in replacement batteries.
Replacement seats for a Harley Davidson can be purchased from local Harley Davidson dealers. Alternatively they can sometimes be found for purchase online on eBay.
You can find replacement Harley Davidson mirrors on Amazon, JC Whitney, eBay, cruisercustomizing. The types of mirrors vary from customized ones to replicas to replacement parts.
75w90 gear oil, synthetic or non synthetic
no!
go to biketronics.com
For Harley-Davidson motorcycles, it's recommended to use Harley-Davidson's own brand of oil, such as the Screamin' Eagle or V-Twin Synthetic oil, which are specifically formulated for their engines. Alternatively, high-quality motorcycle oils from reputable brands like Mobil 1, Amsoil, or Castrol that meet the necessary specifications can also be used. Always check the owner's manual for the specific oil type and viscosity recommended for your model.
Amsoil 75-90 Severe Gear, fully synthetic.
mobil 1 75-90 synthetic or reg
yes
A Harley Davidson Ultra can be purchased from a Harley Davidson dealership. On their website you can locate the nearest Harley Davidson dealership to you.
Baystate Motorcycle does Harley Davidson repairs and sells spare parts including replacement headlights in the Boston area. The business was founded in 1970 and has a long track record of quality work.