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#4574071 - 11/14/17 06:28 PM Warming up to 5W20 for winter But 5w30 for summer
Fallguy Offline


Registered: 10/26/10
Posts: 242
Loc: Iowa (No, But I do Like It)
My vehicle states 5w20 is the recommended oil but 5w30 is also acceptable.

Will run 0W20 for the winter, love the low MRV (9200 at -40C) and can get down to -15F where I live.

In summer thinking I will run 5W30.

Know 5w20 (0w20's) are stout oils, just cringe at running it on 100F days when summer rolls back around.
(using synthetic, M1 EP 0w20 currently).

Anyone else doing similar and swinging back an forth between viscosities. Maybe by summer I will just stay 0w20 (flip a coin I guess). Splitting hairs here but that is what we do here correct?

2017 pentastar 3.6L


Edited by Fallguy (11/14/17 06:28 PM)
_________________________
"Yes I likely did a search already, I want more info".
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#4574080 - 11/14/17 06:33 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
irv Offline


Registered: 10/08/06
Posts: 1043
Loc: Oshawa, Ont. Canada
Originally Posted By: Fallguy
My vehicle states 5w20 is the recommended oil but 5w30 is also acceptable.

Will run 0W20 for the winter, love the low MRV (9200 at -40C) and can get down to -15F where I live.

In summer thinking I will run 5W30.

Know 5w20 (0w20's) are stout oils, just cringe at running it on 100F days when summer rolls back around.
(using synthetic, M1 EP 0w20 currently).

Anyone else doing similar and swinging back an forth between viscosities. Maybe by summer I will just stay 0w20 (flip a coin I guess). Splitting hairs here but that is what we do here correct?

2017 pentastar 3.6L


I run 5W-20 in my 13 Ram Hemi as that's what it calls for but I have considered 5W-30 in the summer also. My buddy, who's a mechanic says it's not a good idea. I am around an oil change a year as I only average 7-9,000 kms annually so I will just stick with the 5W-20 as it doesn't make much sense, money wise to do it.
Curious what others have to say however.
_________________________
2017 Chevy Impala 3.6 Ltr.
2013 Ram Hemi Bighorn QC 4x4
PP and/or PUP for both vehicles.

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#4574085 - 11/14/17 06:37 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
tig1 Offline


Registered: 01/03/09
Posts: 13655
Loc: Illinois
I use 0-20 year round in Fords. Performs great in extreme cold and very high temps of summer. +100F.


Edited by tig1 (11/14/17 06:37 PM)
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4574095 - 11/14/17 06:47 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
rooflessVW Online   content


Registered: 12/24/11
Posts: 4018
Loc: North Carolina
I never bought off on switching viscosity for summer/winter. There's a fair bit of overlap between grades.

Pick one and stick with it year round. If it's good enough at operating temp in winter, it'll be fine in summer.
_________________________
"Zed's dead baby, Zed's dead."

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#4574098 - 11/14/17 06:48 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I'm old enough to remember when 5W-30 was the winter oil. grin2

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#4574103 - 11/14/17 06:54 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: tig1]
Rolla07 Offline


Registered: 11/05/11
Posts: 4732
Loc: MTL, CANADA
Originally Posted By: tig1
I use 0-20 year round in Fords. Performs great in extreme cold and very high temps of summer. +100F.


Agree +1
_________________________
2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967


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#4574123 - 11/14/17 07:09 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
fdcg27 Offline


Registered: 09/25/09
Posts: 15682
Loc: OH
If your oil changes break neatly between the cold months and the warm ones, then this might be a solid plan.
Certainly there's be no harm in it, but a 5W qualified oil is more than adequate for -15F.
_________________________
17 Forester 12K MSS 0W-20
12 Accord LX 86K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

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#4574138 - 11/14/17 07:20 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
xxch4osxx Offline


Registered: 03/11/09
Posts: 2601
Loc: Cedarbrae, Ontario
I use Amsoil XL 5w20 in my Ram 5.7 year round.
_________________________
2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)


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#4574140 - 11/14/17 07:20 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
CKN Offline


Registered: 10/14/14
Posts: 3680
Loc: Utah
Think about how many owners are running "the manual specs" all year around and their trucks are not blowing up......

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#4574141 - 11/14/17 07:22 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
My Dodge Journey runs 5w20 year round with oil temperatures of 250F. Beautiful UOA's and that is in a hard working 4 cylinder that does high rev's on the highway. No engine blown yet.
_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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#4574145 - 11/14/17 07:26 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
MONKEYMAN Offline


Registered: 06/24/04
Posts: 2218
Loc: St. Louis
I am considering that myself. I have lots of oil from my oil hoarding days. I changed from 5w-20 Valvoline Premium Conventional at dealership to some DYI 5w-30 Pennzoil Plantinum this summer when it was 102 degrees. I know the Pennzoil will be better with heat. It is interesting what my Hyundai manual says:

Quote:
Lower viscosity engine oils can provide better fuel
economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather.


So 5w-20 for cold weather performance (not noticing a change in economy) and 5w-30 or 10w-30 in the summer is required if I want my car to have satisfactory lubrication in hot weather. That works for me. I mostly have conventional 5w-30 or 10w-30 oil in my stash once I use up the Pennzoil Plantinum. I have about 3 changes of 5w-20.
_________________________
Truth alone triumphs, not untruth.

2017 Elantra SE

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#4574152 - 11/14/17 07:30 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
HangFire Offline


Registered: 08/21/13
Posts: 2506
Loc: Central Maryland
Nothing wrong with 0w20 in the Winter and 5w30 in the Summer... I've ended up doing just that to use up some stocks of oil that otherwise wouldn't get used, put 0w20 in the 5w20 spec car in Winter, 5w30 in either the 0w20 spec or 5w20 spec car in Summer.

It probably doesn't make a bit of difference. Maybe it makes me BITOG-correct. Or, BITOG-incorrect. Maybe it puts me in touch with my ancestors who used straight 10W in the Winter (and only in the Winter). Maybe I'm getting .00001% better performance out of some vague parameter I can't measure. Maybe an oil weight within a range of correct weights is just plain good enough.
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Various musings: http://hangfire.net

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#4574201 - 11/14/17 07:55 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
BJD78 Offline


Registered: 08/05/17
Posts: 493
Loc: Nebraska
All 3 of our vehicles run 5w20 conventional year round with no issues. We make 1-2 trips every summer to LA in 95 to 110 degree heat running with the Sonata running AC full blast via 70 and i 15 no issues running 5w20. 5w20 seems more than adequate for extreme heat and putting on about 3k round trip. By the same token never any issues cranking in cold weather, though the last couple of winters in Lincoln have not been really severe... maybe a half dozen days below in the -5 to -10 range. Our owner manual says 5w20 so I go with that and no issues so far. Perhaps if i lived in the southern desert LA or palm springs I would benefit from running 5w30, but for an occasional trip to the desert once or twice a year I just stick with the manufacturers recommendation, they should know of what they speak as they test these engines in all weather conditions.
_________________________
2010 Forester:122K
2009 Sonata :189K
2010 Tucson:55K

OCI 5K using the cheapest dino oil I can buy,usually NAPA or TSC Travelers oil.

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#4574214 - 11/14/17 08:02 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: Fallguy]
SilverFusion2010 Online   content


Registered: 06/29/11
Posts: 1654
Loc: Crawfordville FL
It depends on the oil temp. 5w-20 is very stable oil. The 0w-20 have also proven themselves to be excellent lubricants.

I would run each for an oci and see what the car likes. Pick that one and stay with it
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4574248 - 11/14/17 08:26 PM Re: Warming up to 5W20 for winter But 5w30 for summer [Re: MONKEYMAN]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
Quote:
Lower viscosity engine oils can provide better fuel
economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather.


I think this assumes conventional oil in use with the bare minimum MOFT that might be encountered not high quality synthetics.
_________________________
'15 Dodge Journey - 90,000 KM's - SSO 5w20
'06 Hyundai Santa Fe - 535,000km - SSO 0w30 (R.I.P)

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