I am sorry to do this, but i had to address datgrl and jackscan. First of all you cannot compare a 1500cc to an 1800cc engine.it is crazy to do so.A fit is 1500cc and also the scion AxB and the versa 1800cc. the fit and the scion is lighter and the versa is heavier than even a corolla a C segment compact car,that why nissan advertized it as a spacious car not exactly a B compact car although it is built on a B plaform.Why not comparing it to a Corolla and a Civic which all engines are 1800cc. I will bet that the milage are about the same as the Versa.And do not tell me people get 40 in a corolla mpg because i read a post in yahoo, where a guy claims he is getting 40 mpg with his VERSA and some people 38 mpg in this forum.We are not here to bash Nissan or you,but to assist drivers like yourself get more out of your Versa if you have one.And if you where reading my post you would see that your car needs to break in, first to see your perfect 40 mpg, because of the new parts.
I will tell you why it needs to breaking.Because we donot have the slightest clue that we have one of the strongest and almost a frictioness engine of all times.
Nissan has substantially reduced friction between engine parts by developing the first technology in the world to combine a hydrogen-free diamond-like carbon (DLC)*1 coating with special oil.
*1 DLC (diamond-like carbon): A hard film made of carbon which has diamond-like properties. It has superior abrasion resistance and a low friction coefficient.
Energy is lost due to friction that arises between the hundreds of parts that comprise an engine. This ultra-low friction technology uses nanotechnology in order to reduce friction.
Reduces friction by approximately 40% compared to conventional engines, by forming an ultra-low friction film of nanometer*2 level thickness on top of the hydrogen-free DLC coating.
*2 One hundred millionth of a meterUse of a hydrogen-free DLC coating improves binding with the engine oil and results in the formation of a firm ultra-low friction film when special oil additives are added.It is now possible to reduce overall engine friction by 25% by applying the technology to Valve lifter piston rings and piston pins. this is what I can explain in my own terms,when there is a change in oil, at each change in oil, the engine becomes more frictionless and hence you have more milage. please visit this web site to learn more.
http://www.nissan-global.com/E....html