Straw and all who do,We Stock and Use Redline & I have been using it for years.I've been using Amsoil for Over 25/years. It's Cheap NOW! My Bike Transmission loves the Redline Fluid. You can get good results with Synthetic Amsoil Gear 75/90 in the Tranny as well.
I've Never had trouble with the Neutral or moving parts of the Primarys area on any of my Buells. I changed the Stator months ago XB12R/08. Nice & clean the Internal parts Were, and the nearly 16,000miles on the Primary Chain Adjuster the Clutch Basket bearings, spotless just a bare couple of marks on the Adjuster & the Thrust Washers were no marks at all.I have Changed many of those parts on customers Bikes. Most are just uninformed to buy the better brands. Yes,the Synthetic oils (all thin out) when hot [IT's] supposed to. Duh! The Heat Activates the oil to slightly thin and slip through lubing faster and better than many oils.I have noticed even slightly lower oil pressure after warmed up due to Better Lubracation & less friction.
There are a lot of good Oils out there,as well as Tranny fluids. Each has an Opinion of course. I was in Military Marine Aircraft Wing OR[MAW]214, for nearly 18,years and this is what helped me learn the Value of [good] Oils Verses (Great) Oils. Some Oils are used for Specific Jobs and thats all that can be used..Always Read a Manual on the Vehicle.
Yes it will specify their brand. Once you actually see the difference from Schooling and testing facilitys' it becomes clear. Now you can't use Syn., oils in some cases Depends on what is Designed.
Bikes however or Vehicles in General Public use it's mostly a Choice. (Stick to what you have found out) and your Vehicle will reward you with less internal problems in the future with good maintenance.It takes research to change over to a New Brand OR just watch your Mechanic if they are good cause we hate to work on our own Rides no MONEY in it.
Upgrades not included! I have caught many a Customer buying the same brands as our Shop. We don't like call backs! If someone doesn't like Synthetic Brands then Change it [often] with the Reconmended Brands and it will work well.Ride Safe*Jimi[smirk][up]