Quote:
Originally Posted by DavyNM
fuel economy?
I'm willing to bet that "fuel economy" never entered the minds of BMW owners when they bought their BMWs. Feel free to correct me if I'm wrong.  |
This is an easy answer. I actually decided to buy my first four-cylinder turbo versus a six cylinder, because with the six cylinder I was getting 26 mpg, and with this four-cylinder turbo I’m getting 39.mpg.. while at the same times getting the same horsepower.
However, I’m still not used to the diesel sound of the fuel injectors in my four-cylinder turbo compared to the purring kitty sound of my quiet six cylinder.
But the real reason, you and everybody should be concerned about the fuel economy, is explained in the “Motor Oill Geek” clip, I posted above. Especially with GDI (direct injection), your piston rings can get stuck. Which can starve the engine from oil, causes bypass which leads to more deposits, and of course causes more wear. So the increase in the fuel economy is not coming from some magic formulation in the Valvoline R&R oil, but from freeing up the piston rings, so they can seal properly thus restoring lubrication, combustion efficiency, reducing blow by….all of which leading to restoring the original fuel efficiency. Sometimes it’s worth to actually read the comments and watch the links.