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10w30 & low temps #4648201
01/27/18 05:02 PM
01/27/18 05:02 PM
Joined: Feb 2008
Posts: 1,065
MA.
Camprunner Offline OP
Camprunner  Offline OP
Joined: Feb 2008
Posts: 1,065
MA.
What is the lowest outside temperature you feel comfortable running a 10w30 synthetic?

Re: 10w30 & low temps [Re: Camprunner] #4648204
01/27/18 05:05 PM
01/27/18 05:05 PM
Joined: Jun 2003
Posts: 33,561
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,561
ME
Regularly or irregularly?

My F150 turned over and caught at -17'F on Nextgen green bottle, whatever that is, syn-blend?

If I were somewhere with a winter climate and HAD TO start unaided I'd go with at least a 5w30 synthetic. But the truck sits in my driveway and I fire it up only to go to the dump. If it chooses not to go there's always the next day.

Re: 10w30 & low temps [Re: Camprunner] #4648208
01/27/18 05:14 PM
01/27/18 05:14 PM
Joined: Oct 2014
Posts: 1,349
NoVA
Jimzz Offline
Jimzz  Offline
Joined: Oct 2014
Posts: 1,349
NoVA
All the synthetic 10w30 oils I have seen have a -30 pour point or lower. Even most conventional 10w30 has around a -30 pour point.

Heck 20w50 is rated around -20 pour point.

People forget cars use to come with straight 30 weight and would still go 100k if taken care of.


yup
Re: 10w30 & low temps [Re: Camprunner] #4648209
01/27/18 05:18 PM
01/27/18 05:18 PM
Joined: Apr 2008
Posts: 37,924
Ontario, Canada
OVERKILL Online content
OVERKILL  Online Content
Joined: Apr 2008
Posts: 37,924
Ontario, Canada
Acknowledging it is allowed to slip a grade in service, no lower than the CCS temp, which is -25C.


2018 RAM 1500 Big Horn EcoDiesel
2016 Grand Cherokee SRT
Re: 10w30 & low temps [Re: Camprunner] #4648244
01/27/18 06:14 PM
01/27/18 06:14 PM
Joined: Feb 2003
Posts: 7,686
Jupiter, Florida
Cujet Offline
Cujet  Offline
Joined: Feb 2003
Posts: 7,686
Jupiter, Florida
As I've posted before, Mobil 1 5W-30 and 10W-30 flow significantly better in cold temperatures than other commonly available oils.

https://www.youtube.com/watch?v=uQ_vxdO_9nc


People who count on their fingers should maintain a discreet silence.
Re: 10w30 & low temps [Re: Camprunner] #4648249
01/27/18 06:17 PM
01/27/18 06:17 PM
Joined: Jun 2002
Posts: 19,505
Iowegia - USA
MolaKule Offline
MolaKule  Offline
Joined: Jun 2002
Posts: 19,505
Iowegia - USA
-35F in an '03 PathFinder, no problem starting it.

Last edited by MolaKule; 01/27/18 06:21 PM.

Scars remind us of where we have been, but do not have to dictate where we are going.
Re: 10w30 & low temps [Re: Camprunner] #4648263
01/27/18 06:32 PM
01/27/18 06:32 PM
Joined: Mar 2011
Posts: 411
new jersey
hemitruck Offline
hemitruck  Offline
Joined: Mar 2011
Posts: 411
new jersey
My first car was a ,67 Cutlass. Called for 10/40 WT oil. This was in 74, so no synthetic at the time. Started fine in below 0 degrees.

Re: 10w30 & low temps [Re: Camprunner] #4648270
01/27/18 06:39 PM
01/27/18 06:39 PM
Joined: Dec 2013
Posts: 2,098
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,098
socal
In my old 02 s10, I had 10w30 (I think it was syn blend) that sat for a weekend where overnight it reached -4F. Started up and ran fine the next morning. In my vehicles, Im comfortable using 10w30 above 0 degrees F.


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: 10w30 & low temps [Re: Camprunner] #4648271
01/27/18 06:40 PM
01/27/18 06:40 PM
Joined: Dec 2017
Posts: 2,998
SE British Columbia, Canada
Snagglefoot Online content
Snagglefoot  Online Content
Joined: Dec 2017
Posts: 2,998
SE British Columbia, Canada
Do you have a diesel or Gas engine. No auto manufacturers have recommended 10w-30 in a gas engine in over 20 years. Use 5W-30 instead. If its a Diesel engine you are excused.

Last edited by Snagglefoot; 01/27/18 06:42 PM.

If you want the job done right......do it yourself.
Re: 10w30 & low temps [Re: barkingspider] #4648272
01/27/18 06:40 PM
01/27/18 06:40 PM
Joined: Oct 2002
Posts: 36,620
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,620
Great Lakes
Originally Posted By: barkingspider
Im comfortable using 10w30 above 0 degrees F.

+1


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: 10w30 & low temps [Re: Camprunner] #4648286
01/27/18 06:53 PM
01/27/18 06:53 PM
Joined: Dec 2017
Posts: 2,998
SE British Columbia, Canada
Snagglefoot Online content
Snagglefoot  Online Content
Joined: Dec 2017
Posts: 2,998
SE British Columbia, Canada
The ASTM cold cranking test is done at -25 C (13 F). 10W-30 starts OK at this temp. However, why induce more cold weather wear than is necessary? Using 5W-30 is a better solution.

Last edited by Snagglefoot; 01/27/18 06:58 PM.

If you want the job done right......do it yourself.
Re: 10w30 & low temps [Re: Snagglefoot] #4648292
01/27/18 06:56 PM
01/27/18 06:56 PM
Joined: Mar 2015
Posts: 5,420
Virginia
bbhero Offline
bbhero  Offline
Joined: Mar 2015
Posts: 5,420
Virginia
-25C equals -13F I believe. And -30C equals -22F. And at -40 they are both the exact same.


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
Re: 10w30 & low temps [Re: Quattro Pete] #4648304
01/27/18 07:13 PM
01/27/18 07:13 PM
Joined: Jul 2015
Posts: 4,655
Down Under
SR5 Offline
SR5  Offline
Joined: Jul 2015
Posts: 4,655
Down Under
Originally Posted By: Quattro Pete
Originally Posted By: barkingspider
Im comfortable using 10w30 above 0 degrees F.

+1

+2

At 0F (-20 C) you should start with no problems with a good battery, and as many have commented, much lower is possible. But to me 0F and below would be when I would select a 5W30, above that I like the shear stability and low volatility of a 10W30.


---------------------------------------------------------------------------------
Castrol GTX Ultraclean 15W40 A3/B3 + Wesfil-Cooper Z154
Re: 10w30 & low temps [Re: Camprunner] #4648305
01/27/18 07:13 PM
01/27/18 07:13 PM
Joined: Dec 2016
Posts: 7,143
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,143
Waco, TX


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: 10w30 & low temps [Re: OVERKILL] #4648310
01/27/18 07:19 PM
01/27/18 07:19 PM
Joined: Sep 2009
Posts: 16,183
OH
fdcg27 Offline
fdcg27  Offline
Joined: Sep 2009
Posts: 16,183
OH
Originally Posted By: OVERKILL
Acknowledging it is allowed to slip a grade in service, no lower than the CCS temp, which is -25C.


Which would be -13F and still pretty darn cold.
Realistically, most of us in the lower forty eight will never see temperatures cold enough that a 10W grade oil would be a problem.
Even lower overnight temperatures won't usually matter since they typically aren't sustained long enough to chill the oil in the sump to the ambient temperature of an only briefly reached low.
There is also always the option of a sump heating pad, which makes the W grade of the oil irrelevant.
One of these would also be nice on one of our below zero mornings, since warmed oil makes for a warm engine and faster heat to demist the windows and warm the driver without a lot of idling.
You don't see these much here on gassers, but I did see the tell-tale AC hanging out on local gassers on a drive through South Dakota and Montana.


18 Accord Hybrid FF
17 Forester 18K VME 0W-20
12 Accord LX 96K SSO 0W-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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