Running D5 hard
In my attempt to improve fuel efficiency, for the past year I have been driving my xc70 very cautiously.
Watching some videos on carbon buildup/blocked EGRs and stuck swirl flaps, I am wondering if I am doing more harm than good.
Is it wise to work the car hard every now and then? If so, is there a recommended method to this?
__________________
2008 XC70 2.4D SE
|