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#4542923 - 10/14/17 08:08 AM Winter and summer gas explained
ZZman Offline

Registered: 03/17/08
Posts: 5790
Loc: Michigan
2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40

#4542939 - 10/14/17 08:21 AM Re: Winter and summer gas explained [Re: ZZman]
shanneba Offline

Registered: 07/10/04
Posts: 888
Loc: Indiana (IN)
We change our gasoline blend RVP six times a year in Indiana smile

CountryMark Plus Gasoline Specs
2003 BMW 330Ci
2013 HD Sportster XL1200C

#4542976 - 10/14/17 08:53 AM Re: Winter and summer gas explained [Re: ZZman]
ATex7239 Offline

Registered: 01/19/17
Posts: 331
Loc: Texas,USA

I purchased an '02 Durango 4.7 while in the military and owned it several years after. The SUV saw summers and winters in the Southeast (where I bought it), Midwest, Northwest, and eventually landed in my home state in of Texas after I discharged.

I never noticed a lick of different in the performance or reliability across the state and seasons. YMMV
'12 Buick Enclave 139,xxx
Valvoline ML SynBlend 5w30
ACDelco PF63E

'17 Ford Fusion (Company Lease) 42,xxx
Oil Don't know
Filter Don't care

#4542997 - 10/14/17 09:21 AM Re: Winter and summer gas explained [Re: ZZman]
DBMaster Offline

Registered: 09/18/12
Posts: 5323
Loc: DFW
I do notice 1-2 fewer mpg in the coldest months around here. This could very well explain it.

#4543026 - 10/14/17 10:05 AM Re: Winter and summer gas explained [Re: ZZman]
mjk Offline

Registered: 02/15/11
Posts: 1233
Loc: Wishin' I was in Wi
As soon as we switch to winter blend in MN (beginning of Oct), I lose at least 1 mpg in my Tahoe. Weather is still warm, so that isn't the issue.

#4543040 - 10/14/17 10:19 AM Re: Winter and summer gas explained [Re: ZZman]
thorromig Offline

Registered: 03/22/12
Posts: 804
Loc: BerksCounty/Pa.
I lose MPG in the Ram & Acura in signature during the winter blend season "every" year.
00 Dodge Ram 5.2L 4x4 Edge 10W30 FU (91K)
08 Acura TL Type S 3.5L PUPP 5W20 FU (101K)
17 Jetta TSI SE 1.4L Turbo - Edge 0W40 FU (Hers) (4K)

#4543957 - 10/15/17 11:21 AM Re: Winter and summer gas explained [Re: ZZman]
DBMaster Offline

Registered: 09/18/12
Posts: 5323
Loc: DFW
With my previous vehicle - 1989 Honda - I didn't notice a significant change. That was because the older A/C compressors required more of the engine's power than the ones in use today. I can still feel a difference in performance when using the A/C in my 2012 Mazda, but not as much as in previous vehicles.

#4544211 - 10/15/17 04:23 PM Re: Winter and summer gas explained [Re: ZZman]
CT Rob Offline

Registered: 08/11/05
Posts: 143
Loc: connecticut
Filled up today and im down 1 mpg .So it's here in Ct now.
2017 Toyota Tundra SR5 Crewmax 4x4 Trd offroad.Inferno Orange.All stock for now....

#4545450 - 10/16/17 06:56 PM Re: Winter and summer gas explained [Re: ZZman]
DAC17 Offline

Registered: 02/12/04
Posts: 160
Loc: CT, USA
I lose at least 5%, and maybe 10% during the winter. Hard to tell, though, how much is from the gas and how much from the cold starts. On long highway trips, generally 5% less in winter.
2019 Corvette Z06
2016 Ford Escape Titanium 2.0
2017 Chevy Volt Premier

#4546662 - 10/17/17 08:51 PM Re: Winter and summer gas explained [Re: ZZman]
stevo585 Offline

Registered: 08/26/17
Posts: 37
Loc: Orlando, FL
I never notice much difference here in Florida. Maybe we don't get it down here since its almost never below 40F.
2014 Subaru BRZ, Turbo'ed @ 10psi, ~320hp
M1 HM 10w-30, Subaru filter

2014 Toyota Camry - M1 EP 5w-20