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Oil temps: Summer vs Winter #5217940 09/20/19 12:42 PM
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Snagglefoot Online Content OP
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For all you lucky Bitoggers who have oil temp gages can you give us an idea of what oil temps you get when the ambient temps are freezing vs when they are hot. Just curious since many of us will go up a grade in the summer and back down in the winter. My next change will be 5w30 after having 5w40 in my truck this past summer. Thanks. smile


If you want the job done right......do it yourself.
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5217973 09/20/19 01:06 PM
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Back when I had my A4 (1.8T engine), I would see oil temp around 200F during summer and around 175F during winter, when ambient temps were near freezing point.

In wife's Q5, I really don't notice much difference between seasons - it seems to hover around 190-200F all year long, from what I've observed. It just takes longer to get to those temps during winter. Similar story in the Charger, although I don't drive it much during winter.




2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5217989 09/20/19 01:23 PM
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Also depends on where the sensor is located. But I recall 10-20°F difference. Have to check my excel sheets.
Combination of higher viscosity in the summer, the ambient temp and more load ...

Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5217994 09/20/19 01:26 PM
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Higher in summer, lower in winter. Oil coolers tend to mitigate. Stop and go traffic make it worse.

Nothing surprising.


I use the overseas manual to choose my viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 154k, SS 5w30/Amsoil

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218055 09/20/19 02:50 PM
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Audios Offline
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My 97 1.8t also had one, I remember consistent 205 with syn, and 225 or so with conventional 15/40 (circa 2001 oils) It would maybe drop 5-10 degrees when cold, and hung there a bit but usually got up to normal operating temp in time. I dont really recall 2 separate temps though, it was almost always in the 205 area, probably from the oil cooler warming.
The E46 M3 used to run safely below the 210 mid mark on the gauge, probably 200 or so in the winters when I used to drive it then, and 210 in summer. The M5 will always be dead center or a little over 210, tons of heat in the engine bay. The oil temp gauge is my favorite in the clusters, I feel its a more accurate display of engine temps when you can see the slight fluctuations when slowing down to traffic from highway speeds, or in traffic.
Edit: I also remember the Caravans we rented a few years ago showed between 195-200 on the oil temp on our trips.

Last edited by Audios; 09/20/19 02:51 PM.

2002 VW Golf TDI-T5 10/30
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW-Twin Power 10/60
2003 BMW M5-M1 15/50
1998 BMW M3/4/5-M1 10/40
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218076 09/20/19 03:24 PM
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barryh Offline
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Originally Posted by Snagglefoot
For all you lucky Bitoggers who have oil temp gages can you give us an idea of what oil temps you get when the ambient temps are freezing vs when they are hot. Just curious since many of us will go up a grade in the summer and back down in the winter. My next change will be 5w30 after having 5w40 in my truck this past summer. Thanks. smile


I was surprised when I did the comparison for Helix Ultra 5W30 vs 5W40 If the 5W30 runs only 7 Deg F cooler it's the same kinematic viscosity at typical operating temperatures. The 5W30 would run cooler anyway without taking ambient temperature into account.


Barry

1979 BMW R45 (Triple QX 5W40)
2009 Mercedes C180K (MB oil 229.5 5W40)
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218097 09/20/19 04:00 PM
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I don’t have a gauge with temps, but I’m the Spring/Summer I’ll be at 4 bars which is the halfway point. In Fall/Winter the gauge stops as 3 bars. Typically if it’s 50*F outside or less it’s 3 bars tops.


18 Giulia Ti Sport Q4
  • 2.0T I4 - 18k - PP Euro LX 0w30 - Mobil 1 - 10k/1yr

16.5 CX-5 Touring AWD
  • 2.5L I4 - 64k - Castrol Edge EP 0w20 - Denso - 7.5k/1yr
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218125 09/20/19 04:44 PM
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With modern oil coolers that are water cooled instead of air, the difference between summer and winter is not much. Maybe 5 degrees C.


Last edited by Jimmy_Russells; 09/20/19 04:45 PM.
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218144 09/20/19 05:20 PM
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Over the winter (ambient around freezing) at full operating temp on the highway, 219. Summer (ambient temp in the mid-90s) will see up to 225. 2018 VW Golf Sportwagen 1.8, stage 1 tuned.


2018 VW Atlas SEL 4Motion 3.6 VR6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 TSI Unitronic St2 IS20 - LiquiMoly 5W40 VW filter
2013 Ford Focus SE HB 2.0 Ti-VCT - MC syn-blend 5W20 MC filter
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218711 09/21/19 10:21 AM
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Interesting information that confirms something I've suspected. I've often seen people talk about why they need a "stouter" oil because live in a hot summer climate, yet it would seem that there's little difference in say summer in Arizona versus summer in Maine as far as oil stress goes.



FIRST LAW OF DEBATE
Never argue with a fool - people might
not know the difference.
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218743 09/21/19 10:47 AM
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Running summer and winter grades of oil is a throwback to the straight grade days. That was 50 years ago or more. There is no need to change these days.


2017 Mazda CX5
Havoline Pro DS 0w20
Roki OEM filter.
Re: Oil temps: Summer vs Winter [Re: PimTac] #5218814 09/21/19 12:22 PM
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Originally Posted by PimTac
Running summer and winter grades of oil is a throwback to the straight grade days. That was 50 years ago or more. There is no need to change these days.


I was referring to the argument that one needs a Xw40 oil over a Xw30 one because it's so hotter than another part of the country.



FIRST LAW OF DEBATE
Never argue with a fool - people might
not know the difference.
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218964 09/21/19 03:49 PM
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Ive seen a 10 or so degree change summer to winter temps. Summer is warmer for sure.


2015 WRX FA20F
Valvoline MST 5W40
Tokyo Roki 15208AA170 filter

Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5218972 09/21/19 04:01 PM
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My Buick has a coolant temp gauge in the info menu. It runs about 180 on cool mornings on my 70 mile drive to work, and if it's a hot day when I head home, it fluctuates between 190 and 201. I imagine oil temp is about 20 degrees hotter at any given time, that's how it is according to the gauge in my semi, a 2013 Kenworth T800 that has both a oil and water temp gauge.


2004 Toyota Tacoma 3.4 V6: Mobil 1 AFE 0W-30, FRAM PH3614 filter
2003 Buick Park Avenue Ultra S/C 3.8 V6: PYB 5W-30, FRAM PH3387 filter
2013 Honda 400EX ATV: Mobil 1 Racing 4t 10W-40, OEM filter
Re: Oil temps: Summer vs Winter [Re: Snagglefoot] #5219063 09/21/19 05:48 PM
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The 300 seems to keep its oil around 185-190, coolant runs 195-200. The van is always around 195-200 for oil and coolant.


2016 Chrysler 300S v6
2018 Dodge Grand Caravan GT

Slight Mopar obsession
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