2011 Nissan Juke: Filling it with Regular
March 16, 2011
We just did an article on Edmunds.com telling the masses that a quick way to save significant money on gasoline is to use regular even if your vehicle recommends premium.
The article states, "Today, engine control systems can compensate for low octane by monitoring knock activity and adjusting ignition advance to quell the knock. This sophisticated electronic capability effectively gives drivers more flexibility in the grade of fuels that they can safely use.
Compared to premium gasoline, lower-octane fuels don't allow the engine to run as much ignition advance during situations where lots of throttle might be used. More ignition advance allows the engine to make more power during these conditions. Since the engine doesn't make quite as much power with lower-octane fuels, this translates into slower acceleration in cars for which premium fuel is recommended. The performance loss is especially noticeable in turbocharged gasoline engines.
The performance loss, however, is something you will only notice if you have a heavy throttle foot. In part-throttle conditions, you can achieve full ignition advance with no knock, regardless of whether you use premium or regular-grade fuel."
The next day I hit a gas station in our long-term Juke. And there is was on the inside of the Nissan's gas door in all caps, "PREMIUM FUEL IS RECOMMENDED FOR MAXIMUM PERFORMANCE."
So I practiced what we preached. I filled the CUV with regular. It took 11 gallons exactly at $4.039 a gallon. Price was $44.43.
If I had used premium at $4.239 a gallon the bill would have been $46.63. So I saved Edmunds Inc. $2.20 and the Juke's performance around town seems to be exactly the same.
Was is worth it?
Scott Oldham, Editor in Chief