Bobo- forgot to use 'American' gallons. Yes, I was quoting Imperial gallons. And I also happen to drive hard in the city, and at 75mph on the freeways and still I get 400 miles in a tank. If I'm highway driving, I get 500+ miles on a tank.

Couple of points
- my tire pressure is always perfect (I'm ****)
- I use K&N airfilter (slight increase in fuel economy)
- I always use cruise when possible (it's hard to control such a powerful beast without accidentally speeding)
- I turn off my climate control or air conditioning if I can
- I always drive with my windows up
- 100% Synthetic oil Mobile 1 in the engine.
- car is always kept in top shape.

BTW - tire pressure has a huge impact on fuel economy. I think for every psi, your fuel economy is thrown a few %. For example, I had a couple of tires on my old beater that were low, fuel economy was terrible for a week (filled up 100 miles sooner). Pumped up the tires, and presto, regular fuel consumption restored.

 

I also follow most of the above points, including having a K&N air filter.

I have never run synthetic oil, but am switching to it after my AutoRX clean and rinse. I am going to use Esso XD3, 0w30, full synthetic year round.

It is the perfect oil for your Calgary climate and is significantly cheaper than Mobil 1 and is showing better UOAs on BITOG. Do yourself a favor and deep six the Mobil 1. Read all about the XD3 on bobistheoilguy.com

No charge to join and search function works and is easy to use.

PS you neglected to add that it is as flat as a pancake in Calgary and for miles around, unless you get into the foothills west of the city.

 

Make sure there mapathlene or whatever ones, but i still wouldnt put em in my tank, im sure they will leave some crap behind.

 

^^^^
haha, yea not sure i would try it

 

http://www.newton.dep.anl.gov/askasc.../chem00485.htm


There you go

 

haha, good find. dont think ill be trying that

 

No no no. The knock sensor is a simple piezoelectric sensor that just senses knocking. It's like a little ste thoscope on your engine, that's all. If your engine knocks, it retards timing. Simple as that. But yes, the knock sensor doesn't care what grade of gas you use. The ECU, however, might take a little while to adjust its timing maps if you suddenly switch to lower octane gas. If you use lower octane gas, knocking will be more likely and the ECU will retard timing, which reduces performance.

 

for those of you getting 400+ to the tank. What are your driving conditions?

I mostly drive 70% highway. I go in at work very early so I can usually do about 80-90MPH
At arounf 85mph my rpms are at 3.3-3.5K rpm. Its gets hot in here like so use my A/C all the time.
I don't blame my wheels because even with my stock wheels I get the same around 320-350miles to the tank.
hate these gas prices

 

I thought we couldnt speak of gasoline anymore?

 

hmm i dont know.. the iRide and i are trying to take a few inches off the gutt.. so i dont know if bud would be good.. too many calories...

 

80-90 mph is not good for the mileage! Try 65 or less and see what happens.

 

Thats no fun

 

You got that right! But neither is getting lousey mileage driving to fast for no reason and paying $$$$$ for gas.

 

this is true as well

 

well guess I'm stuck with bad gas milage.
Freeways here are very new and wide. Everyone drives at those speeds so in order to flow with traffic I must go at those same speeds. These are the times when I wish the Maxima had a longer 5th gear so I could do 90 at 2-2.5K

 

with 87, your maxima will self destruct within 2k..........


no not really

it realy only ends up being about 2-3$ more if you buy 93, and you drive longer on it so in the end it evens out..

 

Or a real long 6th

 

okay, i don't want to get flamed.

if you don't care about the performance,

i guess it's okay to put in 87. i put in 87 because im a cheap man and needs to save money

im still wondering how you guys get 30 mpg..

 

hey use 110 octane then you notice a real difference

 

i mix some toulene in with my 110 octane

 

A common myth is when having your A/C on, on the highway, eats more gas than having your windows open. A special new cast on channel 7 did an investigation on this. Having your windows open on the highway creates alot of wind drag, wind going in the car, slowing the car down, unless of course, you have no rear window and the air just flows through. Having no wind resistance on the highway, ( windows up ), A/C on, will give you better fuel economy. Just opposite around town.

 

You still have wind resistance on the highway with the windows up, just much less.

 

Nope.

It doesn't run "hotter", nor will it do any damage to the engine. The only thing running 87 will do is annoy you and give jerky acceleration when the ECU is constantly pulling timing since the ignition map is set for premium. There are people here with very high mileage that have run NOTHING but 87 octane and the engine is perfectly fine.



87 octane will actually give you BETTER highway mileage than premium. 87 combusts more efficiently under light load conditions, and actually has a slightly higher energy content than 93. I've verified this personally over all of the highway driving I do. Running 87 gave maybe a 1 mpg improvement on the highway. Of course, whenever I step on it, especially around town, the lag and surging from the ECU pulling timing is annoying. With the 90F+ weather I've been sticking with premium. Now that it's cooling off though, and in lieu of very high fuel prices, I'll be going back to 87 or 89. And do no damage whatsoever to the engine.



The description of what knocking is is wrong too. Knocking does not occur "before" the spark plug fires. That's called "pre-ignition" which is different.

 

I always ran my Max on premium (mostly 91 where I lived, except in Houston for 8 months I ran 93) and my 95 C 280 I just sold would flat out die on less than 91 octane.

 

Hehe, hate to burst your bubble but a bullet in the gas tank doesnt do ne thing. It was on Mythbusters on discovery. LOL, yea anyways just run 93 if its a 17 cent difference your just gunna get worse mileage and have to buy more gas in the long run.

 

The so-called experts say that nothing should happen, other than a performance hit on cars that require premium - like suggested by Nissan for the Max.

But my Nissan dealer told me that lower octane gas could damage the O2 sensors. I personally believe that is pure BS.

Having at least 3 O2 sensors fail - at costly repair costs to my wallet - I'm sure was due more to a lousy Nissan-spec'd O2 sensor.

I figure that Nissan O2 sensors must be a horribly bad design to be so easily affected by lower octane fuel, so I spend the extra 2-3 bux per fill - and keep the performance where it should be.

 

I have seen 35+ mpg with my max.