Gears and their best speeds to save on gas... your thoughts??

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silver_vibe55
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Joined: Thu Aug 16, 2007 11:12 pm

Gears and their best speeds to save on gas... your thoughts??

Post by silver_vibe55 »

Just getting used to my new Vibe that I picked up this week and can't help but wonder if I'm driving around in the best gear for the various speeds I'm at. When I say "best" I'm thinking along the lines of gas mileage... although some might argue that with me! For example: when I'm driving around town at 60 KMH (not sure off the top of my head what that is in MPH) I find that I can either stay in 3rd or gear up to 4th. Both work fine, 3rd runs around 3000rpm (which could be high) and in 4th it's around 1800 (which might be too low). Is the answer I'm looking for as obvoius as I think or is there something else in this equation I'm unaware of.Your thoughts please...
2004 Vibe - Silver two-tone, 5-speed manual, tinted windowsFirst on the list: to upgrade into powered locks/keyless entry/alarm system
GrayFox
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Re: Gears and their best speeds to save on gas... your thoughts?? (silver_vibe55)

Post by GrayFox »

The lowest speed you can go in the highest gear while keeping the RPMs high enough to not kill your engine is the most fuel efficient speed I have an Auto so I just try to keep it under 3k
WaveAction
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Post by WaveAction »

i shift around 3k but when i cruise its usually around 2k..sometimes just under
Mavrik
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Re: (WaveAction)

Post by Mavrik »

60-80km I usually stay in 4th gear. It keeps the RPMs low and still enough power to get moving. I try and keep the RPMs under 3000 while driving. Its a different story while shifting, but driving yes... under 3000. So what ever gear keeps me under 3000 at the speed I'm traveling is the gear I select.
2007 stage 2 Satin White Pearl Subaru STi 2008 stage 2 Subaru STi hatch See my car at: Mavrik's car page
goodvibe
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Post by goodvibe »

Lowest RPM you can use without lugging the motor should be good.
Vibe GT, TRD springs, Progress bar, STB, Unichip, Borbet E 16x7.5, 225/50 Bridgestone RE750, beefed up grounds and battery bypass capacitors(had em laying around)
GMJAP
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Re: (goodvibe)

Post by GMJAP »

Quote, originally posted by goodvibe »Lowest you can use without lugging the motor should be good.That should be "highest".This is typically about 1700rpm or so when cruising. When accelerating, upshift between 2500 and 3000. You shouldn't cruise above 2500 (unless you're in 5th).So when cruising at 60KMH, keep it in 4th.
2005 Platinum Base ManualSide & Curtain AirbagsABSPower PackageTinted Windows"Mods": 'old-style' center armrest, center +12v, wheelskins leather steering wheel, AC/Recirc blue backlight, beeps on keyless entry, dome light switch, AC insulation, PCD10 10-disc CD/MP3 changer, AAI-GM12 AUX audio input, K&N filter, "shark fin" antenna.
silver_vibe55
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Post by silver_vibe55 »

Thanks guys. That's really helpful. I'll have that warm, fuzzy feeling now when driving around town tonight knowing that I'm cruising in the "right" gear. Thanks again.
2004 Vibe - Silver two-tone, 5-speed manual, tinted windowsFirst on the list: to upgrade into powered locks/keyless entry/alarm system
djb383
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Location: The Republic of TEXAS

Re: Gears and their best speeds to save on gas... your thoughts?? (silver_vibe55)

Post by djb383 »

Install a vacuum gauge. Then you will know your best economy in each gear.
'05 Lava Tutone base, Pwr Grp, Moon & Tunes, 16" alloys, Auto.....Yep, it's gotta HEMI
WaveAction
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Post by WaveAction »

thats actually a good idea djb, how much do they usually run?moneywise that is
djb383
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Location: The Republic of TEXAS

Re: (WaveAction)

Post by djb383 »

$20-$30 for a new one from a auto parts store or Summit/Jegs. The one in the pic is old school and listed on ebay (not my listing) but will work just as good as a new digital unit. Hope this helps.http://cgi.ebay.com/ebaymotors...ZWDVW
'05 Lava Tutone base, Pwr Grp, Moon & Tunes, 16" alloys, Auto.....Yep, it's gotta HEMI
WaveAction
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Joined: Tue Nov 28, 2006 9:34 am

Post by WaveAction »

awesome..gonna have to check out my local stores and see what they got..then get a 2 or 3 gauge pod for the a-pillar..and get some other gauges
silver_vibe55
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Post by silver_vibe55 »

Well it's been 5 days now since I've been driving my vibe.... I gassed it up last night and was excited to calculate my mileage. With the tips given here and trying to be conscious of my throttle, minus my inexperience on the clutch (lots of over-rev'ing going into first *wince*) my mileage worked out to.... drum roll please.... 7.02L/100km (which means nothing to me so I converted everything) and that worked out to: 33.5 miles/gallon!! NOT BAD!! And that was maybe a 50/50 split of in town and highway driving.
2004 Vibe - Silver two-tone, 5-speed manual, tinted windowsFirst on the list: to upgrade into powered locks/keyless entry/alarm system
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