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Old 10-12-2007, 06:54 AM
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Post Mileage Calculation...

Type: Automatic RX8 2006
I use both auto and manual modes. Drive aggressive... Mostly Hwy driving.

Mileage: 6800km

Gas: Premium (Pioneer or Sunoco)

Price: 1.04

KM: 387 approx. Used the trip recorder to check the km. From a full to
empty tank of gas. (Red light empty warning light comes on)

Amount: $54.06

Last edited by Leesha; 10-12-2007 at 08:14 AM.
Old 10-12-2007, 08:02 AM
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Originally Posted by Leesha
Type: Automatic RX8 2006
I use both auto and manual modes. Drive aggressive... Mostly Hwy driving.

Mileage: 6800km

Gas: Premium (Pioneer or Sunoco)

Price: 1.04

KM: 387 approx. Used the trip recorder to check the km. From a full to
empty tank of gas. (Red light empty warning light comes on)

Amount: $54.06

Hmmmm.....for mostly highway driving I'd expect to see a good bit over 400 on mine. But not that much of a difference I guess.

Maybe MT is more efficient, though I would have thought that to be counter-intuitive!?!?
Old 10-12-2007, 08:10 AM
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The last time I filled up it was around 405km. (52.166L @ 106.5c/L) $55.56 I guess it depends on how much hwy driving I do. That last reading was 50/50. I'm trying it again. Record your's at your next fill up.

Someone else on here wrote me and she only got about 300km on a full tank; city driving, BC.

Originally Posted by GoesLikeStink
Hmmmm.....for mostly highway driving I'd expect to see a good bit over 400 on mine. But not that much of a difference I guess.

Maybe MT is more efficient, though I would have thought that to be counter-intuitive!?!?

Last edited by Leesha; 10-13-2007 at 11:36 AM.
Old 10-12-2007, 08:30 AM
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Originally Posted by Leesha
Type: Automatic RX8 2006
I use both auto and manual modes. Drive aggressive... Mostly Hwy driving.

Mileage: 6800km

Gas: Premium (Pioneer or Sunoco)

Price: 1.04

KM: 387 approx. Used the trip recorder to check the km. From a full to
empty tank of gas. (Red light empty warning light comes on)

Amount: $54.06

I have an MT, 80% hwy driving, and I prob average a little over 420k a tank.

Last edited by daddyg; 10-12-2007 at 01:13 PM.
Old 10-12-2007, 09:07 AM
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I drive the same as daddyG, about 80% Highway. I last filled up 53L of Esso Premium, having gone 480km. I regularily average about 10.5 -11.5L per 100km.

I have 91,000km an 6spd manual.

Juergen
Old 10-12-2007, 09:15 AM
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I yeild around 420km/tank at dipping a littler bit below the "E"

And sunoco, I also believe the 94 burns alot faster the 91 Shell's.. thats you you get tha kind of mileage, and also, auto has a big effect.
Old 10-12-2007, 09:25 AM
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I got approx 400km.. all city driving. Shell V-Power 91, first fill up only
Old 10-12-2007, 01:12 PM
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Originally Posted by TurboEight
I yeild around 420km/tank at dipping a littler bit below the "E"

And sunoco, I also believe the 94 burns alot faster the 91 Shell's.. thats you you get tha kind of mileage, and also, auto has a big effect.
Speaking of the Sunoco 94 (I use Esso 91 mostly) - do you find any different in performance over a 91 octane?
Old 10-12-2007, 02:51 PM
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You will find with SUnoco 94 your mileage is always worse than with the 91 of other stations. This is because Sunoco has 10% ethanol, which is used to increas octane. The disadvantage of this is ethanol requires a richer air/fuel ratio than regular gasoline. About 15% richer. So this affects your mileage.
Old 10-12-2007, 03:05 PM
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at the 3/4 mark I get about 300 kms with almost all city driving (like 95%).
Old 10-12-2007, 03:47 PM
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About 380 mostly non-highway driving before my fuel light comes on - about 54 litres to refill. It kinda sucks, but my wife's new small SUV - a Grand Vitara JLXL - is worse.
Old 10-13-2007, 11:39 AM
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Originally Posted by TurboEight
I yeild around 420km/tank at dipping a littler bit below the "E"

And sunoco, I also believe the 94 burns alot faster the 91 Shell's.. thats you you get tha kind of mileage, and also, auto has a big effect.
That could be why mine is so low...I fill up at Sunoco 94. I'll try 91 and see the difference.
Old 10-13-2007, 12:52 PM
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doesnt your car have the padel shift? i don't really know about RX8 AT but i know the new AT model for most cars save way more gas than manual does. Once i was at NIssan dealer, i had seen the new nissan altima eats only 9.8L/100km with 3.5L(or3.0L i forgot)!

k, my full tank gas got 435 km once, but about 400 was from Highway....91 oct
Old 10-13-2007, 02:34 PM
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Old 10-13-2007, 02:35 PM
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Originally Posted by Leesha
That could be why mine is so low...I fill up at Sunoco 94. I'll try 91 and see the difference.
You will, for sure see a difference, becuase i've tried=)

shell v power 91 is way better mileage vs sunoco's 94, but then i should be running 94 with boost, Lessha, you could get away with 91!, much cheaper too!
Old 10-13-2007, 02:42 PM
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I believe you because my second reading was with a different gas station and I got 405km/tank, (52.166L @ 106.5c/L) $55.56

I am on my third reading will list the results soon.

Originally Posted by TurboEight
You will, for sure see a difference, becuase i've tried=)

shell v power 91 is way better mileage vs sunoco's 94, but then i should be running 94 with boost, Lessha, you could get away with 91!, much cheaper too!
Old 10-13-2007, 07:27 PM
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That's it people! Mic has spoken!!
Old 10-13-2007, 09:03 PM
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This thread is not about saving $$ it's about MILEAGE... I don't care about saving $$ after what I spent for this baby...
Old 10-14-2007, 12:35 AM
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I don't drive my car very hard typically... For the most part its hwy driving at 120kmh in 6th gear (to and from work)
From full to Red-Light last time I got around 315km... That is pathetic...

I should probably have something looked at, correct? Like, a plugged cat or something? I don't know...
Old 10-14-2007, 07:16 AM
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I've noticed an increase in mileage since i have strictly been using 91 octance instead of 94. I just took a trip to toronto from kingston and got 508km on a full tank.....light was on for about 5 minutes before I filled up. Cost me 58 dollars to fill.......believe gas was 101xx for 91 octane. Usually in the city I average about 320 -340/ tanks......higway about 440+. From what I can see everyone seems to get slighlty different results

ps- I should add that this last trip was taken after I had installed my sr motorsports high flo cat.....there was a slight increase in mileage- about 30-40km per tank from what I can notice.
Old 10-14-2007, 11:20 AM
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How does it sound with the cat? Do you have a catback as well? If the sound you have before was a 5 (1-10), how loud is it now?
Old 10-14-2007, 11:55 AM
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I like it A LOT.....if we were rating a stock rx8 at a 5....then with the high flo cat I would say its an 7.......this is all subjective of course..........if you want I can take a short vid and send it to you via pm........just let me know. I dont have a cat back.......yet. more concerned with suspension stuff...the stock cat back is pretty decent as you dont get much gains from aftermarket exhausts.
Old 10-14-2007, 12:11 PM
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No thanks, I don't need a video. You can't really tell how loud something is from a video. I ask because I've been casually considering a high flow cat but I really don't want my car any louder than it already is.


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