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0W-20 for Texas winters/summers good? #4777828
06/05/18 02:00 AM
06/05/18 02:00 AM
Joined: Aug 2017
Posts: 114
USA
crazy_raccoon Offline OP
crazy_raccoon  Offline OP

Joined: Aug 2017
Posts: 114
USA
I'm currently located in central Texas and been trying to figure which oils are good for our vehicles (read signature) year round or if I should switch due to the seasons. Most of the topics just talk about using a particular oil year round due to their climate but I'm Texas it can be bipolar [censored]. Some winters it can get in the single digits (rarely) and easily triple digits in the summer. I'm currently deployed and plan on doing UOAs for our vehicles when I get back to get a better feel.


'07 Scion tc
- 103K miles
- Valvoline FS w/ML 0W-20 D1G2
- FRAM Ultra
'07 Honda Accord coupe 4cyl
- 138K miles
- Supertech FS 5W-20 D1G2
- FRAM TG
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777834
06/05/18 02:32 AM
06/05/18 02:32 AM
Joined: Sep 2008
Posts: 4,149
Southeast Texas
gfh77665 Offline
gfh77665  Offline

Joined: Sep 2008
Posts: 4,149
Southeast Texas
Nothing bad will happen with 0w-20, but it's not optimal in TX. Since you are out of warranty, at least use a 5w-20, or better yet, a 5w-30. In TX the "0" will never benefit you.

Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777848
06/05/18 04:41 AM
06/05/18 04:41 AM
Joined: Jul 2005
Posts: 32,144
NY
demarpaint Offline
demarpaint  Offline

Joined: Jul 2005
Posts: 32,144
NY
Originally Posted By: crazy_raccoon
I'm currently located in central Texas and been trying to figure which oils are good for our vehicles (read signature) year round or if I should switch due to the seasons. Most of the topics just talk about using a particular oil year round due to their climate but I'm Texas it can be bipolar [censored]. Some winters it can get in the single digits (rarely) and easily triple digits in the summer. I'm currently deployed and plan on doing UOAs for our vehicles when I get back to get a better feel.


I agree with the poster above me, I'd run a 5W30 year round. Thanks for your service!


God Bless Our Troops

Re: 0W-20 for Texas winters/summers good? [Re: gfh77665] #4777853
06/05/18 04:51 AM
06/05/18 04:51 AM
Joined: Aug 2017
Posts: 114
USA
crazy_raccoon Offline OP
crazy_raccoon  Offline OP

Joined: Aug 2017
Posts: 114
USA
Originally Posted By: gfh77665
Nothing bad will happen with 0w-20, but it's not optimal in TX. Since you are out of warranty, at least use a 5w-20, or better yet, a 5w-30. In TX the "0" will never benefit you.


I think our cars benefited a little when we used 0W-20 on long road trips. I noticed a significant improvement in gas mileage on highway runs, smoother idle and of course faster warm up/flow times in the winter season vs using 5W. I just hope it didn't shear or at least have better protection during last summer in NC before I moved back to TX.


'07 Scion tc
- 103K miles
- Valvoline FS w/ML 0W-20 D1G2
- FRAM Ultra
'07 Honda Accord coupe 4cyl
- 138K miles
- Supertech FS 5W-20 D1G2
- FRAM TG
Re: 0W-20 for Texas winters/summers good? [Re: demarpaint] #4777857
06/05/18 04:55 AM
06/05/18 04:55 AM
Joined: Aug 2017
Posts: 114
USA
crazy_raccoon Offline OP
crazy_raccoon  Offline OP

Joined: Aug 2017
Posts: 114
USA
Originally Posted By: demarpaint
Originally Posted By: crazy_raccoon
I'm currently located in central Texas and been trying to figure which oils are good for our vehicles (read signature) year round or if I should switch due to the seasons. Most of the topics just talk about using a particular oil year round due to their climate but I'm Texas it can be bipolar [censored]. Some winters it can get in the single digits (rarely) and easily triple digits in the summer. I'm currently deployed and plan on doing UOAs for our vehicles when I get back to get a better feel.


I agree with the poster above me, I'd run a 5W30 year round. Thanks for your service!


You're welcome and I appreciate your support. The 2AZ-FE motors from Toyota area a funky one and the CAFE regulations didn't make it better. Before '07 they are speed for 5W-30. After that like mine currently with upped compression and oil squirters, they are speed for 5/0W-20.


'07 Scion tc
- 103K miles
- Valvoline FS w/ML 0W-20 D1G2
- FRAM Ultra
'07 Honda Accord coupe 4cyl
- 138K miles
- Supertech FS 5W-20 D1G2
- FRAM TG
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777861
06/05/18 05:23 AM
06/05/18 05:23 AM
Joined: Jun 2011
Posts: 1,866
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline

Joined: Jun 2011
Posts: 1,866
Crawfordville FL
5 or 10w-30


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777863
06/05/18 05:29 AM
06/05/18 05:29 AM
Joined: Jul 2005
Posts: 32,144
NY
demarpaint Offline
demarpaint  Offline

Joined: Jul 2005
Posts: 32,144
NY
Originally Posted By: crazy_raccoon
Originally Posted By: demarpaint
Originally Posted By: crazy_raccoon
I'm currently located in central Texas and been trying to figure which oils are good for our vehicles (read signature) year round or if I should switch due to the seasons. Most of the topics just talk about using a particular oil year round due to their climate but I'm Texas it can be bipolar [censored]. Some winters it can get in the single digits (rarely) and easily triple digits in the summer. I'm currently deployed and plan on doing UOAs for our vehicles when I get back to get a better feel.


I agree with the poster above me, I'd run a 5W30 year round. Thanks for your service!


You're welcome and I appreciate your support. The 2AZ-FE motors from Toyota area a funky one and the CAFE regulations didn't make it better. Before '07 they are speed for 5W-30. After that like mine currently with upped compression and oil squirters, they are speed for 5/0W-20.


Yes they made some tweaks. I still think in your climate a 30 grade oil is a better choice. Opinions are going to vary, that's mine.

After a lot of research, and speaking with experts about the topic a 30 grade oil was the winner. I changed two of my 5W20 spec'd vehicles to 5W30 with no regrets. NY winters are much colder and NY summers certainly not as hot as a Texas summer. Both vehicles are doing great.


God Bless Our Troops

Re: 0W-20 for Texas winters/summers good? [Re: SilverFusion2010] #4777864
06/05/18 05:31 AM
06/05/18 05:31 AM
Joined: Nov 2006
Posts: 21,798
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,798
MA, Mittelfranken.de
+1 10w30 synthetic like PP, it usually has lower NOACK which is desirable in high temp environments. 10w30 is not thick oil and will flow and protect well in any temps you encounter year round in TX.


ASE L1, Master. Deutsch Meisterbrief.
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777866
06/05/18 05:40 AM
06/05/18 05:40 AM
Joined: May 2018
Posts: 1,844
Tri State Conservative
Zee09 Offline
Zee09  Offline

Joined: May 2018
Posts: 1,844
Tri State Conservative
I agree with demarpaint!


"If I walked on water, they'd say I couldn't swim."
Re: 0W-20 for Texas winters/summers good? [Re: Zee09] #4777868
06/05/18 05:42 AM
06/05/18 05:42 AM
Joined: Mar 2015
Posts: 6,169
Virginia
bbhero Offline
bbhero  Offline

Joined: Mar 2015
Posts: 6,169
Virginia
Me too +2

And you are up way too early Zee09 LOL


Nissan Altima 3.5 Coupe
Havoline high mileage 5w30 Microgard 57356
"Treat your family like your friends and treat your friends like your family."
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777877
06/05/18 06:16 AM
06/05/18 06:16 AM
Joined: Dec 2011
Posts: 1,806
War Eagle
toneydoc Offline
toneydoc  Offline

Joined: Dec 2011
Posts: 1,806
War Eagle
I like Trav's choice for the Texas climate


1994 Jeep 164k Castrol Synblend 10w30
2014 Camry 40k Castrol Magnatec 0w20
2018 Jeep Cherokee 5k Pennzoil Platinum 5w30
2014 HD Ultra 44k Mobil1 15w50
2012 Rav4 40k Mobil 1 0w20
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777879
06/05/18 06:20 AM
06/05/18 06:20 AM
Joined: Dec 2017
Posts: 4,311
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline

Joined: Dec 2017
Posts: 4,311
SE British Columbia, Canada
Interesting things about climate. Most engines have large enough cooling systems to keep their engine at the same temp regardless of ambient temperature. At 100 F driving in Houston, my engine temp was 210 F. At -30 F up in Edmonton, it was at 210 F. Except for the cold starting issue, climate is not that big of an issue. Folks with oil temp gauges have shown the variations in oil temperature are not huge regardless of ambient temp. If you have a marginal cooling system or plugged up rad, itís another issue. But I would go far enough to run 5w30 year round instead of 0w20.
Now for 40 weight Aussies to chime in.

Last edited by Snagglefoot; 06/05/18 06:34 AM.

If you want the job done right......do it yourself.
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777893
06/05/18 06:57 AM
06/05/18 06:57 AM
Joined: Feb 2014
Posts: 1,867
Texas
Dallas69 Offline
Dallas69  Offline

Joined: Feb 2014
Posts: 1,867
Texas
Originally Posted By: crazy_raccoon
Originally Posted By: gfh77665
Nothing bad will happen with 0w-20, but it's not optimal in TX. Since you are out of warranty, at least use a 5w-20, or better yet, a 5w-30. In TX the "0" will never benefit you.


I think our cars benefited a little when we used 0W-20 on long road trips. I noticed a significant improvement in gas mileage on highway runs, smoother idle and of course faster warm up/flow times in the winter season vs using 5W. I just hope it didn't shear or at least have better protection during last summer in NC before I moved back to TX.

You won't notice any difference between 0-20 and 5-20.
Not better mpg
Not faster warmup
Not smoother idle
If you're seeing those things then it's certainly not oil related.
I'm in N.TeX and use 5-20 in my wife's Galant year round and never any issue.
No need for different grades for the seasons. That's a Yankee or California thing it seems.
My .02


2009 Galant-ultra oil and filter
1987 Ford F-150 302
Smittys 5-30
Motorcraft filter
Re: 0W-20 for Texas winters/summers good? [Re: Snagglefoot] #4777896
06/05/18 07:02 AM
06/05/18 07:02 AM
Joined: Feb 2014
Posts: 1,867
Texas
Dallas69 Offline
Dallas69  Offline

Joined: Feb 2014
Posts: 1,867
Texas
Originally Posted By: Snagglefoot
Interesting things about climate. Most engines have large enough cooling systems to keep their engine at the same temp regardless of ambient temperature. At 100 F driving in Houston, my engine temp was 210 F. At -30 F up in Edmonton, it was at 210 F. Except for the cold starting issue, climate is not that big of an issue. Folks with oil temp gauges have shown the variations in oil temperature are not huge regardless of ambient temp. If you have a marginal cooling system or plugged up rad, itís another issue. But I would go far enough to run 5w30 year round instead of 0w20.
Now for 40 weight Aussies to chime in.

If outside temp doesn't matter then why do they put heat range on the oil selection chart?


2009 Galant-ultra oil and filter
1987 Ford F-150 302
Smittys 5-30
Motorcraft filter
Re: 0W-20 for Texas winters/summers good? [Re: crazy_raccoon] #4777902
06/05/18 07:07 AM
06/05/18 07:07 AM
Joined: Apr 2012
Posts: 10,755
Kendall, FL
wemay Offline
wemay  Offline

Joined: Apr 2012
Posts: 10,755
Kendall, FL
OP,

In a healthy engine, 0w20, 5w30, 5w20 or 10w30 will all work just fine. This is really a personal choice since you will undoubtedly notice no benefits or detrimental effects with any of them. This includes MPG and total miles achieved.


2018 Sportage LX 2.4L AWD
2013 Santa Fe Sport 2.0T

Mobil1 HM 10W-30 (both cars)

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