Seems this has saved me a few questions - my local bike shop only has castrol r1 and amsoil so guess I will be trying the amsoil next

The Amsoil Dominator burns just like the GRO, with the added bonus that its red so you actually know when you've mixed a batch up! :D

Well, Amsoil seems to be very popular. What about Maxima Castor 927? I was told it was good.
Trying to decide which oil to start running in new bike. I like to start off with a good oil and stick with it.

Casters smell good but are dirty and tend to gum things up. Ideally for trail work you want a synthetic/semi synthetic with a relatively low flash point. This will provide good lubing without too much gumming/carbon/spooge. Going top of the line using ends up with a high flash point which means half the oil ends up coming out the exhaust.

Maxima K2 synthetic. So far so good, very little smoke at 40:1 and no noticeable spooge. Jetting is still dicey as I am riding instead of testing, but I'll get it sorted soon, I promise.

I like both Amsoil and the Maxima synthetics. They seem about the same for jetting and running purposes.

Amsoil Dominator no spoog really to speak of. 927 works excellent if you like to pull your power valve apart after every two rides to clean it.

Just to clarify, have used castrol r1 (previously tts) on all my previous bikes and it is a good oil, but for some reason it does not sound as crisp in the GG when compared to motul or GRO

I use Champion Oils WP-2 and have zero complaints.

I use dumonde tech dtp racing oil. Locally made.

Motul 800 Factory Line , since ever.