Which Oil Is Best?

[Major Rant]

Ah, where's pete when you need him [img alt=:lol]http://foc-u.co.uk/Smileys/efocicon/lol.gif[/img]

I've been promoted  :lol

Read previous posts. There's no such thing as bloody "Motorcycle oil" just "Oil that is marketed for motorcycles" by men in suits that finance bike-racing.

Use what Mr Yamaha tells you to use ... That's any 10/30 or 10/40 oil that meets the SL or CF spec. Doesn't matter what machine is pictured on the can:  Car, Bike, Lawnmower or Hovercraft.

Avoid oil that has "friction reducing additives" or you will need to clean and rebuild your clutch.
(that's what he means by "some car oils should be avoided")

Personally I use the cheapest oil that meets the spec (currently ASDA 10/40) and I change it twice as often as Mr Yamaha says. That's because new cheap oil is better than 3000 mile "wonder-oil".

I then use the old oil mixed with "creosote substitute" to paint the fence.