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  #1  
Old 11-23-2003, 02:22 AM
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mileage plummeting

is it just winter driving? i dont smell gas. im light on the throttle. nobody answered this before.
the awd is engaging more assertively these recent white winter weeks and im wondering if more fuel is consumed then with normal summer driving?
anyone know? im getting like 280 m/tank.

gas prices are dropping just as fast so if thats the case im not too concerned. perhaps i should put in some OCTANE BOOSTER and see if anything happens. =P
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  #2  
Old 11-23-2003, 04:56 AM
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Oxygenated winter gas. It's the worst - drops me by about 4mpg every year.
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  #3  
Old 11-23-2003, 11:51 AM
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to tell you the truth, 280mptank is pretty good, i get around 300 with the 5spd, got around 250 at the most with the auto.
phil
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  #4  
Old 11-23-2003, 03:16 PM
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that is a huge relief.
thanks!
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  #5  
Old 11-23-2003, 10:29 PM
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Quote:
Originally posted by Phast SVX
to tell you the truth, 280mptank is pretty good, i get around 300 with the 5spd, got around 250 at the most with the auto.
phil
i can squeeze 400 miles safely out of a full tank, but i do mostly highway driving. this equates to about 23mpg. i hear some people reporting mileage in 30mpg range. how can this be possible?
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1992 Subaru SVX LS-L "Everett" #8738 - 01/1992 - Ebony Pearl - 139k miles - 5MT shifty - Sold 07/31/2011

1992 Subaru SVX LS-L "Sven" #1599 - 05/1991 - Claret - 168k miles - Traded 05/11/2005


2023 Subaru Crosstrek Limited CVT - Crystal White Pearl - 2.8k miles
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  #6  
Old 11-24-2003, 04:18 AM
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30 + mpg

Quote:
Originally posted by shelfy
i can squeeze 400 miles safely out of a full tank, but i do mostly highway driving. this equates to about 23mpg. i hear some people reporting mileage in 30mpg range. how can this be possible?
Kenneth,
We're not long back from an (approx.) 1150 mile trip (1800 km's) which on some sections of the trip we estimated that we exceeded 30 mpg (560 km's for 48 litres)

On the two sections that we achieved these results, the speed was kept at a steady 125 kmph (75 mph) (Local State Limit is 110 kmph). Definately noticed on the stretches were we exceeded this speed that the economy dropped dramatically. Don't know if air temp makes much difference but it was about 80 F. outside of the car.

Kenn
BTW we did ensure that we filled her up to the neck of the tank.
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  #7  
Old 11-24-2003, 08:46 AM
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Nik, no offense, but why do you bother with the questions when you already know that your timing belt isn't installed properly? Any question you might ask about your engine's operation has to be answered with this first:

Get your timing belt problem fixed.

There is simply no good advice to give you until that's solved.
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  #8  
Old 11-24-2003, 11:08 AM
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Re: 30 + mpg

Quote:
Originally posted by KennEls


Kenneth,
We're not long back from an (approx.) 1150 mile trip (1800 km's) which on some sections of the trip we estimated that we exceeded 30 mpg (560 km's for 48 litres)

On the two sections that we achieved these results, the speed was kept at a steady 125 kmph (75 mph) (Local State Limit is 110 kmph). Definately noticed on the stretches were we exceeded this speed that the economy dropped dramatically. Don't know if air temp makes much difference but it was about 80 F. outside of the car.

Kenn
BTW we did ensure that we filled her up to the neck of the tank.
guess i really need to take my car out on a long road trip. i am hoping to go to the reno meet next june. as for filling your tank up to the neck, it shouldn't have any effect unless you did this only on your trip. in fact, by doing this, you would be understating your actual miles per gallon achieved.
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1997 Subaru SVX LSi "Svetlana" #185 of 640 - 09/1996 - Polo Green Pearl - 34k miles

1992 Subaru SVX LS-L "Everett" #8738 - 01/1992 - Ebony Pearl - 139k miles - 5MT shifty - Sold 07/31/2011

1992 Subaru SVX LS-L "Sven" #1599 - 05/1991 - Claret - 168k miles - Traded 05/11/2005


2023 Subaru Crosstrek Limited CVT - Crystal White Pearl - 2.8k miles
2021 Subaru Forester 2.5i Limited CVT - Horizon Blue Pearl - 17k miles
2023 Volkswagen Jetta S 6MT - Pure White - 2.6k miles
2020 Hyundai Ioniq Limited EV - Ceramic White - 30k miles
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  #9  
Old 11-24-2003, 03:17 PM
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Re: 30 + mpg

Quote:
Originally posted by KennEls


Kenneth,
We're not long back from an (approx.) 1150 mile trip (1800 km's) which on some sections of the trip we estimated that we exceeded 30 mpg (560 km's for 48 litres)

On the two sections that we achieved these results, the speed was kept at a steady 125 kmph (75 mph) (Local State Limit is 110 kmph). Definately noticed on the stretches were we exceeded this speed that the economy dropped dramatically. Don't know if air temp makes much difference but it was about 80 F. outside of the car.

Kenn
BTW we did ensure that we filled her up to the neck of the tank.
Hi Ken, I think you should tell them that our gallon is bigger 4.55 lts, or they will be tearing the car to bits trying to get the same.

On a run like yours, I get 10 lts/100 km if I push it. If I stick to the speed limits on cruse control, it can drop to 8.5 lt/100kms.
What equates to 28 to 33 miles per Imperial gallon.

Harvey.
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  #10  
Old 11-24-2003, 05:09 PM
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Re: Re: 30 + mpg

Quote:
Originally posted by oab_au


Hi Ken, I think you should tell them that our gallon is bigger 4.55 lts, or they will be tearing the car to bits trying to get the same.

On a run like yours, I get 10 lts/100 km if I push it. If I stick to the speed limits on cruse control, it can drop to 8.5 lt/100kms.
What equates to 28 to 33 miles per Imperial gallon.

Harvey.
whew! i just looked up the conversion. 28 to 33 mpIg is equal to 23.32 to 27.49 mpUSg. i can buy into this. but i have read US SVXers reporting 30 mpUSg, which would be well over 500 miles per tank. it seems that nik is at the other extreme if he is only getting 280 miles per tank. i guess i should be content with my mileage. and in colorado, our premium fuel octane is only rated at 91. i believe most states in the US it is rated at 93.
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1997 Subaru SVX LSi "Svetlana" #185 of 640 - 09/1996 - Polo Green Pearl - 34k miles

1992 Subaru SVX LS-L "Everett" #8738 - 01/1992 - Ebony Pearl - 139k miles - 5MT shifty - Sold 07/31/2011

1992 Subaru SVX LS-L "Sven" #1599 - 05/1991 - Claret - 168k miles - Traded 05/11/2005


2023 Subaru Crosstrek Limited CVT - Crystal White Pearl - 2.8k miles
2021 Subaru Forester 2.5i Limited CVT - Horizon Blue Pearl - 17k miles
2023 Volkswagen Jetta S 6MT - Pure White - 2.6k miles
2020 Hyundai Ioniq Limited EV - Ceramic White - 30k miles
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  #11  
Old 11-24-2003, 08:48 PM
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its 92 here at chevron.

i would LOVE to rectify my timing problem. however it will require a lot of very cold elbow grease, or hot cash out of my pocket. in either case time is not on my side and i have to pay for a new apartment.

i dont think it applies to this situation because the mileage drop didnt occur until the onset of freezing temperatures. i mean that the problem was singled out. oxygenated winter gas. i struggle to understand the concept, but i am accepting it. im sure i could come up with many other less terminal reasons.
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2012 Honda Insight, slow but cute.

Last edited by NikFu S.; 11-30-2003 at 02:28 AM.
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  #12  
Old 11-25-2003, 02:59 AM
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Harvey,

Yes I was forgetting about Imperial/US Gallons, been metric for too long now. I think your figures are quite correct and achieveable here. I've just got to remember to stop thinking that faster is always better. I think in the sections where Els was driving she would have been closer to your figures, can't say for sure as I was definately sleepy and didn't pay attention. Her driving style is a lot more gentle than mine.

Kenneth,

I think your figures for normal driving are good, I don't really know if the Ron figures for the US, Canada and OZ are measured by the same method, I must ask someone, OZ fuel is not really top quality regardless of what they say at the bowser.

Kenn
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Old 11-25-2003, 03:10 AM
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bowser?
where i come from a bowser is either a dog or a large spikey turtle with a sordid relationship to a certain mustachioed plumber.
do you mean gas pump?
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'92 Dark Teal SVX LS-L, >146,000m
3 pedals, 5 speeds., restoration underway.
2012 Honda Insight, slow but cute.
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  #14  
Old 11-25-2003, 03:31 AM
KennEls KennEls is offline
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Quote:
Originally posted by NikFu S.
bowser?
where i come from a bowser is either a dog or a large spikey turtle with a sordid relationship to a certain mustachioed plumber.
do you mean gas pump?

Yeah Petrol Pump will do, down here a gas pump, pumps "gas" into your car (Liquid Petrolium Gas (LPG)).

Kenn
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  #15  
Old 11-25-2003, 09:21 AM
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Quote:
Originally posted by NikFu S.
its 92 here at chevron.

i would LOVE to rectify my timing problem. however it will require a lot of very cold elbow grease, or hot cash out of my pocket. in either case time is not on my side and i have to pay for a new apartment.

i dont think it applies to this situation because the mileage drop didnt occur until the onset of freezing temperatures. i mean that the problem was singled out. oxygenated winter gas. i struggle to understand the concept, but i am excepting it. im sure i could come up with many other less terminal reasons.
It does apply to this situation, regardless of when a particular symptom manifested itself. Not only are you claiming to drive around with a mis-timed engine, but you're also using some snake oil resistor-in-a-box that's confusing your ECU into dumping more fuel into your engine.

What else need I say???

Look, whether or not you have the time or money to fix your timing belt (even though you just bought that Stealth), I'm simply recommending that you do one of two things:

1. In every post you make asking for advice about the operation of your engine, make sure that you also mention its current abused and tortured state.

2. Stop asking engine questions.

Nik, it's not that I don't want to help you, or that I don't want other people to help you - it's just that not everybody knows about or remembers your situation. It's nothing short of a complete waste of time to try to figure anything out until you get those problems fixed.
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