Quote:
Originally Posted by Jordo!
Why would you assume the dealer fills it up with regular?
The car is tuned from Nissan to require 91 AKI, and unless you never put it under load, it's a bad idea to run a lower than recommended octane.
Octane boosters, at best, may add .5 AKI.
I don't know of any cars tuned to take advantage of midgrade. Might be worthwhile on an older motor tuned for regular that's prone to ping for one reason or another (e.g., carbon deposits on pistons creating hot spots).
What does changing the oil have to do with anything?  |
Dealers are cheap and pinch every cent. Most dealers fill the vehicle with regular on new car fill ups and will even have the lot techs who fill it up watch the fill up till the gauge points to the F indicator and save a gallon or so....I would recommend a octane booster at purchase of a new car at least.