Oil Additives

[Lawrence]

[quote author=Lawrence link=topic=6291.msg63363#msg63363 date=1363254787]
I don't believe adding that stuff increased your fuel economy by 5mpg.  If an increase of more than 10% was possible don't you think manufacturers would use/recommend it?

It's an after market product, that's how businesses make money!
That's no different to saying why didn't Yamaha put a stainless exhaust, better lights, etc, on the Fazer. Or why are there different types of fuel, unleaded or super, or different prices of oils?
It's a money thing.......
[/quote]These days in particular mpg/emissions tends to be pretty high on a lot of peoples list when buying a car.  If a manufacturer can increase it by over 10% by adding a couple of quids worth of additive they would.