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Is higher weight oil in this heat a good idea? #4805250
07/04/18 06:30 PM
07/04/18 06:30 PM
Joined: Aug 2015
Posts: 27
Indiana
CaptainFreon Offline OP
CaptainFreon  Offline OP

Joined: Aug 2015
Posts: 27
Indiana
Ford E350. 5.4L. 191K. No leaks and not burning, none added between changes.
This is a service work van. The cap says 5W-20W. Today I put in 10W-30W Mobil 1 synthetic high mileage.
It's real hot here. It can get very cold in the winter, was using 5-20 then.
What do you think?

Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805255
07/04/18 06:39 PM
07/04/18 06:39 PM
Joined: Sep 2015
Posts: 1,025
PENNSYLVANIA
JeepWJ19 Offline
JeepWJ19  Offline

Joined: Sep 2015
Posts: 1,025
PENNSYLVANIA
2v or 3v? I have a 2v but I thought I read somewhere 3v are picky? Not sure if that's true. I'd think you're fine in this heat, but not sure about winter. I'd think you'd be better off with M1 HM 5w30 if you wanted to stick with the 30 weight.


2002 Jeep WJ 4.0 | Mobil 1 HM 5w30 |
TG8A | 2.5" lift | 148k miles

Software Engineer :]
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805263
07/04/18 06:57 PM
07/04/18 06:57 PM
Joined: Dec 2017
Posts: 1,757
US
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 1,757
US
For summer, my opinion is that the 10w30 is totally fine. Agree with JeepWJ19 that 5w30 in winter is a better choice.

IMO that engine should have a minimum 30 grade, especially in a heavy work environment. I recall the Schaeffer Oil Million Mile Van, they used 15w40 for its entire life.


I use the overseas owner's manual to choose my oil.

Using AMSOIL

Hers: 2008 Jeep Liberty 143k, SS 5w30/Amsoil

His: 2015 4Runner 51k, OE 5w30/Wix

Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805272
07/04/18 07:13 PM
07/04/18 07:13 PM
Joined: Nov 2006
Posts: 21,278
MA, Mittelfranken.de
Trav Offline
Trav  Offline

Joined: Nov 2006
Posts: 21,278
MA, Mittelfranken.de
Your totally fine running 10w30 in hot weather in that engine, agree 5w30 maybe a better choice for winter depending on how cold it gets.
No it does not cause cam phaser issues.


ASE L1, Master. Deutsch Meisterbrief.
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805273
07/04/18 07:20 PM
07/04/18 07:20 PM
Joined: Mar 2017
Posts: 8,303
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 8,303
...
Ive run vehicles below zero and above 100 degrees and I have never changed the grade of oil that was specified for the engine. Granted, during really cold weather the engine will take a bit longer to get up to temperature. If your cooling system is up to par then your engine should be fine.

If you are hauling or towing then thats a separate issue and oil grade should be considered.


Cannot see signatures any longer so it doesn’t matter.
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805278
07/04/18 07:29 PM
07/04/18 07:29 PM
Joined: Dec 2002
Posts: 1,639
North Carolina
Rat407 Offline
Rat407  Offline

Joined: Dec 2002
Posts: 1,639
North Carolina
I say follow the owners manual. Other wise why do they even bother to print it if nobody will follow it.


2002 Silverado 5.3 0w-20 AMSOIL
Re: Is higher weight oil in this heat a good idea? [Re: Rat407] #4805280
07/04/18 07:31 PM
07/04/18 07:31 PM
Joined: Dec 2017
Posts: 1,757
US
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 1,757
US
Originally Posted By: Rat407
I say follow the owners manual. Other wise why do they even bother to print it if nobody will follow it.


Please see the numerous threads on CAFE, mpg, and US oil specifications for your answer.


I use the overseas owner's manual to choose my oil.

Using AMSOIL

Hers: 2008 Jeep Liberty 143k, SS 5w30/Amsoil

His: 2015 4Runner 51k, OE 5w30/Wix

Re: Is higher weight oil in this heat a good idea? [Re: JLTD] #4805285
07/04/18 07:43 PM
07/04/18 07:43 PM
Joined: Dec 2002
Posts: 1,639
North Carolina
Rat407 Offline
Rat407  Offline

Joined: Dec 2002
Posts: 1,639
North Carolina
Originally Posted By: JLTD
Originally Posted By: Rat407
I say follow the owners manual. Other wise why do they even bother to print it if nobody will follow it.


Please see the numerous threads on CAFE, mpg, and US oil specifications for your answer.


So the manual should read if you want to meet CAFE requirements and get better MPG then use the recommended 5w-20, otherwise run what you feel is best for your vehicle in your environment that makes you fee warm and fluffy inside.

That should about cover it.

All the vehicles running around in Phoenix AZ with 0w-20 in their sump are going to wear out quickly due to the extreme heat there. Maybe bithog should start a campaign there since it is so hot, to push 20w-50 so those individuals vehicles will last longer.


2002 Silverado 5.3 0w-20 AMSOIL
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805290
07/04/18 07:48 PM
07/04/18 07:48 PM
Joined: Jul 2005
Posts: 10,903
Maricopa, Arizona.
dave1251 Online happy
dave1251  Online Happy

Joined: Jul 2005
Posts: 10,903
Maricopa, Arizona.
It really does not matter but are rather thin. It won't effect wear to the left or right.


make the inside of your engine oil cap white.
don't use.
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805293
07/04/18 07:53 PM
07/04/18 07:53 PM
Joined: Jun 2002
Posts: 2,136
Texas
Bud Offline
Bud  Offline

Joined: Jun 2002
Posts: 2,136
Texas
My last F150 was a 05 with the 5.4. Over the eleven years I kept it I used both 5w20 and 5w30. Saw no difference in how the truck ran or in gas mileage.


2016 Honda Pilot EX-L with NAVI.....Mobil 1 0w20 AFE and Honda OEM Filter
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805300
07/04/18 08:09 PM
07/04/18 08:09 PM
Joined: Apr 2012
Posts: 10,504
Kendall, FL
wemay Offline
wemay  Offline

Joined: Apr 2012
Posts: 10,504
Kendall, FL
I use both 20 and 30 in my Sonata here in steamy hot Miami. Meh, no difference.


18 KIA Sportage 2.4 AWD
M1HM 10W30, OEM
ST SYN 5W30, ST9688 (next)

13 Hyundai Santa Fe Sport 2.0T
PPeL 5W30, OEM
M1HM 10W30, OEM (next)
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805307
07/04/18 08:22 PM
07/04/18 08:22 PM
Joined: Feb 2003
Posts: 8,086
Jupiter, Florida
Cujet Offline
Cujet  Offline

Joined: Feb 2003
Posts: 8,086
Jupiter, Florida
My 5.4L prefers 10W-30 here in South FL. Better UOA's but also eliminates the mild phaser clatter.


People who count on their fingers should maintain a discreet silence.
Re: Is higher weight oil in this heat a good idea? [Re: CaptainFreon] #4805311
07/04/18 08:31 PM
07/04/18 08:31 PM
Joined: Apr 2008
Posts: 541
Miami Beach
Tahoe4Life Offline
Tahoe4Life  Offline

Joined: Apr 2008
Posts: 541
Miami Beach
I use only 20 in Miami. I ran 300K miles using 5w20 in a 2005 Crown Vic. That is in 24/7 nightmare traffic in Miami Beach with a/c constantly on. I only run 0w20 in my Tahoe. I do not see vehicles dropping dead on the side of the road using 20. Here in Miami it is hot all year long.

I wish this nonsense would stop about going to a higher oil grade oil [thinking it is better for your engine] because of summer heat.


2016 Chevrolet Tahoe LT
Mobil 1 0w20 AFE or EP
AC Delco Filters
Re: Is higher weight oil in this heat a good idea? [Re: Rat407] #4805320
07/04/18 08:47 PM
07/04/18 08:47 PM
Joined: Dec 2017
Posts: 1,757
US
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 1,757
US
Originally Posted By: Rat407
Originally Posted By: JLTD
Originally Posted By: Rat407
I say follow the owners manual. Other wise why do they even bother to print it if nobody will follow it.


Please see the numerous threads on CAFE, mpg, and US oil specifications for your answer.


So the manual should read if you want to meet CAFE requirements and get better MPG then use the recommended 5w-20, otherwise run what you feel is best for your vehicle in your environment that makes you fee warm and fluffy inside.

That should about cover it.

All the vehicles running around in Phoenix AZ with 0w-20 in their sump are going to wear out quickly due to the extreme heat there. Maybe bithog should start a campaign there since it is so hot, to push 20w-50 so those individuals vehicles will last longer.


Ouch I just hurt my ocular nerve from rolling my eyes so far back. Not what I am saying at all, just trying to avoid putting the same information and debate from those threads here. Sorry that my post caused such a knee-jerk reaction; I cannot cure your lack of perspective, only you can do that so please go and actually do some reading.


I use the overseas owner's manual to choose my oil.

Using AMSOIL

Hers: 2008 Jeep Liberty 143k, SS 5w30/Amsoil

His: 2015 4Runner 51k, OE 5w30/Wix

Re: Is higher weight oil in this heat a good idea? [Re: JLTD] #4805322
07/04/18 08:54 PM
07/04/18 08:54 PM
Joined: Sep 2010
Posts: 8,226
Texas
4WD Online confused
4WD  Online Confused

Joined: Sep 2010
Posts: 8,226
Texas
Originally Posted By: JLTD
Originally Posted By: Rat407
I say follow the owners manual. Other wise why do they even bother to print it if nobody will follow it.


Please see the numerous threads on CAFE, mpg, and US oil specifications for your answer.


With that mileage - a 30 grade is not exactly some radical decision

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