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12-19-2013, 11:18 PM | #5101 |
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Member#: 319157
Join Date: May 2012
Chapter/Region:
MAIC
Vehicle:2012 Impreza 4DR 5MT |
It's not necessarily because the cold fluid is more of a drag. The engine just wants to warm up as quickly as possible.
The low temp light goes out when the engine crosses 120F, which is far from normal operating temperature. Many manual cars delay illuminating the upshift light on a cold engine so that the driver keeps the engine spinning, even though the car runs just fine in a higher gear. Our manuals don't have working shift lights, but for the first few highway miles, I stay out of fifth.
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12-19-2013, 11:40 PM | #5102 | |
Scooby Specialist
Member#: 372100
Join Date: Oct 2013
Location: D.C.
Vehicle:2013 Premium 5dr CVT DGM |
Hmm, so I guess the only real difference between waiting and immediate driving might be what r0dzilla was noticing;
The computer gives you a more accurate mpg reading when allowing a 'blue light goes off' warm up. Quote:
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12-19-2013, 11:59 PM | #5103 |
Scooby Specialist
Member#: 345877
Join Date: Feb 2013
Chapter/Region:
MAIC
Location: Pittsburgh, PA
Vehicle:2013 Impreza Sport Ice Silver |
Even on the CVT, until the "cold light" goes out, it seems to hold the gears longer than after it goes out.
I normally let the car idle a few minutes before pulling out on a cold start. It normally helps the car overall feel better.. |
12-20-2013, 12:29 AM | #5104 |
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Member#: 310435
Join Date: Feb 2012
Location: Fayetteville, NC
Vehicle:'12 Sport Limited Black - 255,685 miles |
I drive off after about 30 seconds. I live in the back section of my neighborhood and it's 1 mile to reach the main road with six stop signs along the way. The blue light goes off by the third stop sign. I also notice the CVT will hang in 5th if it's not up to normal temp because of the enormous 3.25 gallons of transmission fluid in this little car. My AWD 5.0 V8 Explorer holds 3.5 gallons.
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12-23-2013, 02:51 AM | #5105 |
Scooby Guru
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
I am getting sick of this bitterly colder than average winter! Seeing 22mpg @ 70mph at -10f tonight. Between the cold, the crap winter blend, and e10 I am seriously down min of 30% mpg.
I am definitely going to try to make a warm air intake because at this point my Buick gets better mpg , and on the Subaru I'm not sure what else I can do. Last edited by flyboy1100; 12-23-2013 at 03:20 AM. |
12-23-2013, 08:42 AM | #5106 |
*** Banned ***
Member#: 302570
Join Date: Nov 2011
Location: dear old dixie
Vehicle:2013 XV DGM! |
Move to the sunshine state.
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12-23-2013, 09:12 AM | #5107 |
Scooby Guru
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
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12-23-2013, 10:08 AM | #5108 |
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Member#: 372100
Join Date: Oct 2013
Location: D.C.
Vehicle:2013 Premium 5dr CVT DGM |
^^^ don't forget about love bugs...
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12-23-2013, 11:37 AM | #5109 |
Scooby Guru
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
25mpg right now, 8mph headwind, 70mph, -17f. Eff me (car is optimistic today art -11, but all nearby airports are -17/-18)
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12-23-2013, 12:50 PM | #5110 |
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Member#: 299286
Join Date: Oct 2011
Chapter/Region:
NESIC
Location: Upstate NY
Vehicle:2017 Legacy Limited White |
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12-23-2013, 12:52 PM | #5111 |
Scooby Specialist
Member#: 340456
Join Date: Dec 2012
Location: Honolulu, Hawaii
Vehicle:2013 Impreza |
2nd tank of 87E0. Yesterday's fill up came out to 33.5 MPG avg. However, that included a lot of unnecessary idling after the TPMS light illuminated the week before. It took some time to fill the tires, including spare, with my mini compressor with the engine running (tires were down around 10 psi.). Tried with the engine off and the compressor's power demand blew a fuse. So probably left some MPG on the table.
FWIW, the best indicated avg MPG on the dash display after this fill up was a ridiculously hybrid-like 53.7 MPG at equally hybrid-like speeds of 40-45 MPH. And then I took it on the freeway where it plummeted. |
12-23-2013, 12:55 PM | #5112 |
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Member#: 354284
Join Date: Apr 2013
Location: Midwest
Vehicle:2013 Imp Sport CVT SWP |
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12-23-2013, 01:17 PM | #5113 |
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Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
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12-23-2013, 01:46 PM | #5114 |
Scooby Specialist
Member#: 310435
Join Date: Feb 2012
Location: Fayetteville, NC
Vehicle:'12 Sport Limited Black - 255,685 miles |
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12-23-2013, 01:50 PM | #5115 | |
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Member#: 323103
Join Date: Jun 2012
Chapter/Region:
MAIC
Location: Columbia MD
Vehicle:2018 WRX Pure der |
Quote:
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12-23-2013, 06:49 PM | #5116 | |
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Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
Quote:
I have some pics to post a little later from today |
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12-23-2013, 11:54 PM | #5117 |
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Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
idle
60mph, you can see the IAT is slightly warmer than the OAT, but not very much. only my scoop is removed 70mph, this morning, outside temp was colder than this says i plan to do a lot more scanning in the upcoming days, especially as the temps should be 30-40f warmer than this morning. |
12-24-2013, 09:05 AM | #5118 |
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Anyone experience that heat wave in the Mid East? NJ here. It got almost to 70 f or so. Nothing you guys don't know already but to see such a stark difference within a day or so was incredible.
Anyway holy cow on difference in mileage. I don't have exact numbers but basically every time I take a trip no matter how short my miles to empty decreases by 10 miles minimum. This is during normal cold operation maybe 30 degrees. I swear I drove maybe 20 miles and it actually went up by 10 in the warm weather. This is in reference to 'miles to empty' dash display. |
12-24-2013, 09:55 AM | #5119 |
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Member#: 330507
Join Date: Aug 2012
Location: Ottawa
Vehicle:2015 Jetta TDI Pure White |
No heatwave here, -20C feels like-28C with the WC factor.
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12-24-2013, 10:22 AM | #5120 | |
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Member#: 301213
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Chapter/Region:
South East
Location: Raleigh, NC
Vehicle:2012 Imp. Sp. Ltd. Blue/Silver |
Quote:
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12-24-2013, 10:34 AM | #5121 |
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Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
Got some nice hose to build my warm air intake
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12-24-2013, 10:35 AM | #5122 | |
Scooby Specialist
Member#: 315353
Join Date: Apr 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2012 Impreza Sp Prem 5MT OBP/DGM |
Quote:
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12-24-2013, 10:36 AM | #5123 |
Scooby Guru
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
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12-24-2013, 02:53 PM | #5124 |
Scooby Guru
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:2012 2.0i Sport 5MT DGM |
Will do more testing tonight, and might move it, but at +3f with a 25mph straight crosswind I was seeing intake temps of 37-40f. Will test this for a while and see if there is any kind of improvements
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12-24-2013, 04:14 PM | #5125 |
Scooby Specialist
Member#: 319157
Join Date: May 2012
Chapter/Region:
MAIC
Vehicle:2012 Impreza 4DR 5MT |
Is your dipstick missing?
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