Rather than being fooled by specious posts with simply wrong cut-and-paste quotes, and pictures which have no correlation to lubrication by a positive displacement pump in a running engine, stick with a reliable source of info you can trust. Such as the manufacturer of your bike.Thanks all for each opinion. A lot of the fellow Dutch racers with Yamaha R6 & R1 use Motul 300v or Yamalube 10W 40.
More HP and lower temp with a 10w-30 sounds like music in my ears, but i am a little afraid how the transmission and clutch will react.
In the documents Yamaha says that the 10w 30 will do ok till an outside temp of +20 Celcius. While im racing it at +32 Celcius at a hot summer day. Dont know if they meassure at standing still, or with driving wind at 160 km/h hour average ( 100 Mph )
Are you really sure that the 10w-30 will not damage anything, like the gear bearings or clutch?
I only want to change do oil once a year after 10 trackdays, thats 1800km per year.
Here in the netherlands, i can find Lucas 10w - 30 Synthetic API SM / JASO MA-2 ACEA A3.
This matches the Yamaha spec as far as i see.
What do you guys think of LUCAS oil in the US ?
Yes I'm confident a 30 grade will meet and exceed your racing expectations...Are you really sure that the 10w-30 will not damage anything, like the gear bearings or clutch?
What do you guys think of Lucas oil?
Don’t do a 10w30, there is one person and one person only on this forum that suggests that time and time again.
You're welcome... if 30 wasn't right for clutch or gearbox Yamaha would not have listed on your oil guide... I understand your apprehension but racing is all about over coming ones fears...Don't know why Lucas is sold here, but its cheaper the yamalube and the only in 10w 30 or 5w 30.
Thanks for the reports. So, a lot thinner then yamalube.
Maybe a bit to thin for the clutch and gearbox?
I am afraid to try it do, maybe i better stick to the yamalube or motul 10w 40
And as said before, the manual says don't use 10W-30 if ambient temps are above 68F. That right there should steer him away from using it for racing in 90F weather. I would never use any xW-30 in a race bike in 90F weather.... if 30 wasn't right for clutch or gearbox Yamaha would not have listed on your oil guide... I understand your apprehension but racing is all about over coming ones fears...
And as said before, the manual says don't use 10W-30 if ambient temps are above 68F. That right there should steer him away from using it for racing in 90F weather. I would never use any xW-30 in a race bike in 90F weather.
BSL ... have you full out track raced your RC45 using xW-30 oil, if so which one? Have you ever tore down your engine and looked at all the crank, rod and cam journal bearings?
Friend, that Yamalube VOA is 13 years old. Incredibly likely it has changed since then. Do not use it to compare.Do you perhaps have a report of repsol motoracing 4t and shell advange ultra 4t 10w 40 and? The i can compare with the yamalube