Engine oil

[nick crisp]

1. When you get your bike serviced they take oil out of a big drum. I assume that this is nothing special, just the minimum spec oil without the car additives.

2. When people say a motorbike engine creates more shear etc and therefore needs a thicker oil, how do you know that the motorbike oil that is sold is any 'thicker' (or fuller, etc) than car oil, except that it is described as motorcycle oil? Is the oil in (1) suitable for motorcycles?

3. What's to stop someone arranging a supply of ASDA car oil (without the agents) then bottling it up with a picture of a motorcycle on it? Would make a tidy profit! Is there a trading standard that states a motorcycle oil must have certain standards to differentiate it from car oil?

1. The oil a dealer has in the drum is (supposedly) the same as is available in 1 or 4 litre bottles, dependant of course on which oils he chooses to stock.
2. The weight of the oil is described on the packaging, eg 10W40, 20W50 etc.
3.No idea!