^^^ This, I drive a 2010 6 Spd, mostly city and I don't putt around... According to the car I average 19.6mpg... I drive probably around 40-50 miles most days... To and from work and to and from class.

 

Well, where I buy gas it’s twenty cents difference. But in the case where it’s thirty cents the annual extra cost would be $225. But IMO That’s still a worthwhile expenditure toward better performance and longer engine life.

In your case it’s your call of course. But it seems to me that you would be happier driving a more fuel efficient vehicle that’s designed to take regular, rather than a car that’s designed for premium and trying to downgrade it to your preferences. It’s like paying $1800 extra for a factory navigation package and using a $200 hand-held Garmin instead. I just don't see it.

 

Not really!
I found the Infiniti to meet my needs.
V6, very comfortable for driving long trips, 6 speed manual, navigation, backup camera, bluetooth, homelink, etc
BTW I still carry my $79 Garmin that the wife can program while I'm driving.The service people at my dealer also confirmed no problem using regular and using premium is a waste of money. All brand new vehicles are delivered with a full tank of regular.

I'm an old farht happy camper

Telcoman

 

I love how this thread had absolutely nothing to do with MPG but just the mention of the word makes the same people espousing their fatuous ideas to come and post about it anyway.

To that end, if you really want to increase MPG use non-ethanol.

 

From N.Burnaby to Richmond eh? that's basically my trip backwards.

My best was 13 but I easily go up to 14+ l/100km. Maybe we can trade jobs and save the commute, lol.

 

Good analogy. There's a lot of people out there that do it just to be able to boast that their saving money and they feel empowered by telling the rest of us we are wasting ours.

I go with the guys who have hundreds of years of combined schooling, training and experience that designed the G. They say I should use premium in this car, who am I to argue.

 

No! Just informing others of my experience using a cheaper grade of gasoline over hundreds of thousands of miles and keeping very detailed MPG records.

These are the same guys that recommend changing oil every 3750 miles, yet there are some individuals that brag & boast of going 20k miles between oil changes and think that using expensive synthetic oil is ok.

Well its not!

It might be ok if you lease and the next owner is stuck with a poorly maintained vehicle?

The same byproducts (moisture, carbon, acid, etc.) of an internal combustion engine occupy the crankcase over time whether it is SAE 30 oil at $3.00/qt or some synthetic at $10/qt

Telcoman

 

Telcoman,
I’m not too sure where you’re going with this. If one follows the maintenance schedule recommended by Infiniti, including oil changes, the owner is given a choice, from 3750 miles as you said but up to 7,500 miles (the one I follow) between changes. The maintenance guide (whom you may say are the “same guys”) does not push either schedule, nor do they recommend synthetic oils other than saying the oil used must meet API standards.

To me this seems to be a reasonable approach. And this recommended method includes, of course, the use of premium fuel. You may think that Infiniti is trying to play some sort of truth in advertising game, but I believe they’re trying to keep your engine viable for a very long time while giving you the performance expected from an Infiniti.

 

I'm just making a point that the use of regular 87 octane is fine and its use will not cause any detrimental effects to an Infiniti engine.

It made no difference on any vehicle I've ever owned including my previous 92 Lexus, 88 Mazda 929, 74 Mazda RX4 Rotary engine and others. All driven over 100k miles.

Well I believe that they are.

I put over 171k miles on my 06 G35 and it ran like new the day I traded it in.
I also never used any expensive synthetic oil. Just SAE 10w30 whatever was on sale.

I did 48 of its 53 oil changes on my 06 so I know what the oil looks and feels like as it drains from the crankcase after 3750 miles.
I would never go 7500 miles without changing oil. In fact I don't think I've ever gone over 4k miles between oil changes.

For those looking to save a little money there is no need to pay an extra $30- $.40 cents per gallon for fuel nor is it necessary to spend extra money on synthetic oil

For those that race their vehicle that's a different issue.

Telcoman

 

Sooooo you follow the oil change frequency recommendation from the manufacturer but not the one for premium fuel??

I'm confused

 

I'm not!

I've seen sludge build up in engines back in the day when I purchased used vehicles. My purchased used 55 Chevy's valve cover was filled with sludge.
SAE 5w-30 oil is cheap when purchased on sale.(Photo below is a few years old but oil is still cheap)




The use of regular 87 octane has never given me a problem and when I did a one month test using 91 and 93 octane on my 06 G35 after reading many posts on this subject, I found my MPG to drop and be worse than when using regular 87 octane.
I use the cheapest 87 octane I can find and My G37S runs perfect.



The owners manual says a lot of things.

One doesn't have to adhere to all of them. I never drain transmission or differential fluid, although many do
Coolant and plugs over 100k miles
I never do 15k, 30k, 45k, etc. recommended services either.
They are just money makers for dealers that induce customers that know little about vehicles.
I Just do oil & oil filter, and cabin filter changes and have had no problems getting hundreds of thousands of trouble free miles on many vehicles.

I should probably mention I've been driving many vehicles over 50 years.

Yes I'm an old farht that loves driving stick shifts and no one on any of these forums is going to induce me to purchase premium gasoline when regular performs just fine.

Telcoman

 

Well, I got you there. I’ve been driving for over 60 years. I bought my first car in 1960 (a ’57 Chevrolet Bel Air that I wish I still had.) But unlike you I always followed the manuals’ recommendations and usually have had good results (the worst car I’ve ever owned was a ’71 Triumph Stag, but that’s another story). As a fellow senior citizen, I must say again how surprising it is to observe someone who seems take great pride in using a non-recommended fuel. Perhaps it’s your distain for auto manufacturers that’s in play here. Oh well, at our ages you’re certainly entitled to it.

 

I also bought my first car in 1960.
A POS 58 Ford which was my first and last Ford



My 55 3 speed stick on the column Chevy came after my 1940 stick shift Pontiac. I wish I could locate a picture of it with its running boards and an AM 6volt radio that had a vibrator. The vibrator in those days chopped the 6 volts to AC for the plate voltage for the tubes in the radio. Vibrators have a different function today.

Used regular leaded in those days.



Telcoman

 

I submit that you either drive like a little old lady, or have no use for the full power potential of your car. If you wanted an econo-car, why didn't you just get an econo-car? Why pay for all that extra hp you're basically shutting off at the pump when you put the 87 in?

To say it is fine is certainly a biased interpretation. You apparently assume that relying upon your car's ECU to retard engine timing and protect itself from damage is a safe bet, and maybe it is if you never demand much power out of your engine. The manufacturer sure didn't think so though, and neither do a lot of people that most likely also appreciate utilizing ALL available hp, not just that which is producible with low octane fuel and low power demands. Would you also buy a heavy duty pickup truck just to haul a load of groceries now and then? If you are so money wise and value conscious as you suggest, then why did you pay for something you aren't using.

Just because you have done it successfully, doesn't make it "fine".

.02

 

Is 19mph a max you can get? IS there any ways we can improve the gas mileage to somewhere above 20mpg? Just curious thou