Hi guys,
Ended up using Mobil Delvac MX 15w40.
It was only 28 dollars for 5l, as opposed to 32 dollars for 1l of amsoil or motul.
The Yamalube on my dipstick "looked okay", but i was itching to try a HDEO in my bike. Got a strap wrench and Delvac MX at a local supermarket and did an oil change. Wow, second oil change and less than 1,500km and the Yamalube was really dirty!
The reason i chose Delvac MX was because i read good things about it, and it was readily available everywhere. I may try Delvac 1300 super next time.
However, i did find Chevron Delo 400 for 25 dollars for a 5l jug. They sell huge drums for an even better price i think, down at a garage here. I might try that one day because it is 3 dollars cheaper, haha.
The bike runs fine, at idle it seems alot quieter, even the exhaust note at idle sounds a bit deeper (ive got an aftermarket slip on). Riding, the bike seems to pull stronger, but the downshifts are a bit hard feeling. I read it gets brtter after a few hundred kms. Or maybe im dow shifting with the clutch in at too high of an engine speed.
Overall im very happy as this is the first time ive changed oil on a vehicle in my life. I was so scared about using a HDEO "diesel" oil, but after scouring the forums here, im glad i made the jump. The bike feels smooth at highway speeds. Used to have to wring the bike to get to 130 or 140km, but now i can get to 130km and cruise there all day long. The bike just feels quicker. Smoother as well, but then again i did perform a fuel injector synchronization at home, which made the bike vibrate less at speed.
I get HDEO for around 5-6 dollars a litre. My bike takes 4l. HDEO is affordable and readily available. Changing oil at the dealership here costs 6 dollars service charge with yamalube at 12 dollars a litre, or castrol 4t activ for 9 dollars a litre. Over time, it equates to savings when changing oil at home with HDEO, and HDEO seems really good because of the detergents and robust properties.