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Re: T6 15w40 - what's to cold? [Re: oakaro68] #5351285 02/16/20 12:48 AM
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Too3zln Offline
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I never plug my LML in due to a it leaking and losing antifreeze. I run conventional 15w40, and have never had an issue with startup. I have seen overnight temperatures as low as -15 on the dash. I use howe's and XDP polar d in the winter. I would run your current oil fill with confidence.


2015 Subaru Legacy 36,000 miles
2011 Chevy 2500HD Duramax 114,000 miles
2004 F-150 FX4 5.4 ticker 232,000 miles
Re: T6 15w40 - what's to cold? [Re: oakaro68] #5351374 02/16/20 06:20 AM
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demarpaint Offline
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Under the circumstances described, I'd be inclined to change it to a 5W40. Just in case you run into colder than expected temps.


God Bless Our Troops

Re: T6 15w40 - what's to cold? [Re: oakaro68] #5351384 02/16/20 06:38 AM
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Olas Offline
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15w is appropriate down to minus 20 celsius (otr minus 4 farenheit)

will it get that cold at your location?

Re: T6 15w40 - what's to cold? [Re: Olas] #5368705 03/06/20 07:54 AM
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oakaro68 Offline OP
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Originally Posted by Olas
15w is appropriate down to minus 20 celsius (otr minus 4 farenheit)

will it get that cold at your location?

Hard to say honestly. I'm headed to NM in the mountains for a ski trip. Statistical weather data shows the area gets to about the mid teens but it's possible it could drop to single digits. Getting nervous cause I have to change the oil today or tomorrow since we're leaving Sunday.

Re: T6 15w40 - what's to cold? [Re: oakaro68] #5368760 03/06/20 09:04 AM
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BrianF Offline
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Don't think twice. Run the 15w40. Already said, many people I know run conventional 15w40 all year up here. When it gets too cold, they use a block heater.


2006 Trailblazer LT. QSUD, Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30, Baldwin BT7349.
1993 GMC 1500. QSAD, Fram PH5
Re: T6 15w40 - what's to cold? [Re: BrianF] #5369053 03/06/20 03:21 PM
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oakaro68 Offline OP
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Originally Posted by BrianF
Don't think twice. Run the 15w40. Already said, many people I know run conventional 15w40 all year up here. When it gets too cold, they use a block heater.


Only thing is my block heater has a recall on it that I still haven't fixed yet so I probably won't be using a block heater

Re: T6 15w40 - what's to cold? [Re: oakaro68] #5369327 03/06/20 08:43 PM
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tundraotto Offline
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I guess you should have got your recall done or changed the oil to 5W-40 if you're that worried about it?

The 15W-40 should be fine.

Re: T6 15w40 - what's to cold? [Re: oakaro68] #5369550 03/07/20 05:06 AM
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Too3zln Offline
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My owner's manual for my lml, if I remember correctly, states to not plug it in until 0f or colder. I'm assuming yours is similar or even better. An anti-gel, on the other hand, is a must in cold temperatures. I will not be stuck with gelled fuel again.


2015 Subaru Legacy 36,000 miles
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Re: T6 15w40 - what's to cold? [Re: Too3zln] #5369562 03/07/20 06:03 AM
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4WD Offline
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always wondered why we don’t see this here … this one from the UK

0A68A494-E60A-491A-A882-8A43EA0BFA2D.png
Re: T6 15w40 - what's to cold? [Re: Too3zln] #5369730 03/07/20 10:12 AM
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oakaro68 Offline OP
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Originally Posted by Too3zln
My owner's manual for my lml, if I remember correctly, states to not plug it in until 0f or colder. I'm assuming yours is similar or even better. An anti-gel, on the other hand, is a must in cold temperatures. I will not be stuck with gelled fuel again.

Yeah same for mine 0F

Re: T6 15w40 - what's to cold? [Re: 4WD] #5370060 03/07/20 06:30 PM
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Kamele0N Offline
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Originally Posted by 4WD
always wondered why we don’t see this here … this one from the UK




Because that grade is like "molasses" to you over the pond laugh


2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 (Shell?) 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10W-40
Re: T6 15w40 - what's to cold? [Re: Kamele0N] #5370874 03/08/20 06:24 PM
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tundraotto Offline
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Originally Posted by Kamele0N
Originally Posted by 4WD
always wondered why we don’t see this here … this one from the UK




Because that grade is like "molasses" to you over the pond laugh



I wonder what that makes the 15W-40 generally used here?

Re: T6 15w40 - what's to cold? [Re: tundraotto] #5373530 03/11/20 03:03 PM
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A_Harman Offline
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Originally Posted by tundraotto
Originally Posted by Kamele0N
Originally Posted by 4WD
always wondered why we don’t see this here … this one from the UK




Because that grade is like "molasses" to you over the pond laugh



I wonder what that makes the 15W-40 generally used here?


15w40 was developed as a "diesel-specific" grade back in the 1970's after 10w40 oils were shown to be shearing out of grade, providing insufficient protection for diesel engines.


2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
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