Notices
2017 - 2022 Super Duty The 2017-2022 Ford F250, F350, F450, F550 & F600 Super Duty Pickup and Chassis Cab
Sponsored by:
Sponsored by: CARiD

Severe Operating Conditions

Thread Tools
 
Search this Thread
 
Old Feb 2, 2023 | 07:10 AM
  #1  
hillduty's Avatar
hillduty
Thread Starter
|
5th Wheeling
Joined: Nov 2022
Posts: 26
Likes: 7
Severe Operating Conditions

I have a 2019 F250 6.7. The truck has 34000 miles and I have been using Motorcraft 10w 30. I will be hauling a heavy truck camper with 3000lb motorcycle trailer and am wondering if I should switch to the heavier oil recommended for severe operating conditions. All constructive advice will be greatly appreciated.
 
Reply
Old Feb 2, 2023 | 07:20 AM
  #2  
KingDeleted's Avatar
KingDeleted
Tuned
5 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2019
Posts: 382
Likes: 79
I wouldn’t worry, especially with the cold temps lately, the truck is overbuilt for the task at hand
 
Reply
Old Feb 2, 2023 | 07:31 AM
  #3  
Ltngdrvr's Avatar
Ltngdrvr
Lead Driver
20 Year Member
Liked
Loved
Top Answer: 5
Joined: Nov 2005
Posts: 8,456
Likes: 4,953
Originally Posted by hillduty
I have a 2019 F250 6.7. The truck has 34000 miles and I have been using Motorcraft 10w 30. I will be hauling a heavy truck camper with 3000lb motorcycle trailer and am wondering if I should switch to the heavier oil recommended for severe operating conditions. All constructive advice will be greatly appreciated.
Temperatures dictate what weight oil to use.
10w30 is shown to be good in the range of 0* to over 100*
Now, if you want more extreme protection, you could go to 5w40 full synthetic, I believe its temp range is -20* to over 100*.
In summer you could go to 15w40, temp range is 20* to over 100*.
 
Reply
Old Feb 2, 2023 | 09:38 AM
  #4  
hillduty's Avatar
hillduty
Thread Starter
|
5th Wheeling
Joined: Nov 2022
Posts: 26
Likes: 7
Originally Posted by Ltngdrvr
Temperatures dictate what weight oil to use.
10w30 is shown to be good in the range of 0* to over 100*
Now, if you want more extreme protection, you could go to 5w40 full synthetic, I believe its temp range is -20* to over 100*.
In summer you could go to 15w40, temp range is 20* to over 100*.
I think I remember reading that the full syn 5w40 is also recommended for heavy hauling as well as temperature. What does your 5th wheel weigh and what are you running for oil?
 
Reply
Old Feb 2, 2023 | 09:53 AM
  #5  
Ltngdrvr's Avatar
Ltngdrvr
Lead Driver
20 Year Member
Liked
Loved
Top Answer: 5
Joined: Nov 2005
Posts: 8,456
Likes: 4,953
Originally Posted by hillduty
I think I remember reading that the full syn 5w40 is also recommended for heavy hauling as well as temperature. What does your 5th wheel weigh and what are you running for oil?
I haul a number of different size trailers and have been using 10w30, either motorcraft or rotella.
But, that may change in the future, it's not the easiest oil to find.
 
Reply
Old Feb 2, 2023 | 11:07 AM
  #6  
4wd6.7L's Avatar
4wd6.7L
Lead Driver
Liked
Loved
Community Favorite
Top Answer: 1
Joined: Dec 2020
Posts: 8,636
Likes: 2,431
Originally Posted by hillduty
I think I remember reading that the full syn 5w40 is also recommended for heavy hauling as well as temperature.
I'm having a hard time finding it now, I thought there was a list of driving conditions that define severe service. I could be mistaken but some of those conditions were towing 1k miles (I interpret as meaning between oil changes), towing at max GVWR often, driving bellow a certain speed for a certain period of time (like stop and go driving), etc...basically, it is hard to not fall into one of those conditions.
 
Reply
Old Feb 2, 2023 | 11:38 AM
  #7  
rufushusky's Avatar
rufushusky
Cargo Master
Joined: Jul 2011
Posts: 2,658
Likes: 967
From: Walpole, MA
Originally Posted by 4wd6.7L
I'm having a hard time finding it now, I thought there was a list of driving conditions that define severe service. I could be mistaken but some of those conditions were towing 1k miles (I interpret as meaning between oil changes), towing at max GVWR often, driving bellow a certain speed for a certain period of time (like stop and go driving), etc...basically, it is hard to not fall into one of those conditions.
For my 2019 they define it as follows:
 
Reply
Old Feb 2, 2023 | 11:58 AM
  #8  
4wd6.7L's Avatar
4wd6.7L
Lead Driver
Liked
Loved
Community Favorite
Top Answer: 1
Joined: Dec 2020
Posts: 8,636
Likes: 2,431
Originally Posted by rufushusky
For my 2019 they define it as follows:
That's it, thank you. So yeah, many owners would fall into that use type.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-2

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-3

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Feb 2, 2023 | 12:35 PM
  #9  
hillduty's Avatar
hillduty
Thread Starter
|
5th Wheeling
Joined: Nov 2022
Posts: 26
Likes: 7
So, what is the general consensus? To switch, at this point, or not to switch. I just saw another thread on this topic and see mixed opinions. Oh well, I guess it's just another oil thread. I'm also wondering which oil might provide better fuel economy.
 
Reply
Old Feb 2, 2023 | 12:37 PM
  #10  
B-737's Avatar
B-737
More Turbo
Liked
Loved
Community Favorite
Joined: Dec 2020
Posts: 598
Likes: 218
From: New Jersey
It takes very little to fall into severe duty. I switched to 5w-40 immediately. 10w-30 for fuel economy is a gimmick, no thanks.
 
Reply
Old Feb 2, 2023 | 12:41 PM
  #11  
rufushusky's Avatar
rufushusky
Cargo Master
Joined: Jul 2011
Posts: 2,658
Likes: 967
From: Walpole, MA
Originally Posted by hillduty
So, what is the general consensus? To switch, at this point, or not to switch. I just saw another thread on this topic and see mixed opinions. Oh well, I guess it's just another oil thread. I'm also wondering which oil might provide better fuel economy.
Given the fact you have a F250, I am assuming you are looking at 10k to 10.8k of GVW giving you something around 2300-2700 pounds of payload. Google informed me your slide in tips the scales at 2641 pounds all by itself. So before you fuel up the truck your already pretty close to GVW. To me that is severe use, trips the third to last bullet point from above. IMHO of course so that and 3 bucks can't even get you coffee.
 
Reply
Old Feb 2, 2023 | 12:42 PM
  #12  
UGA33's Avatar
UGA33
Lead Driver
15 Year Member
Photogenic
Liked
Loved
Joined: Sep 2006
Posts: 5,665
Likes: 162
From: Cartersville, Ga
Club FTE Silver Member

Originally Posted by hillduty
So, what is the general consensus? To switch, at this point, or not to switch. I just saw another thread on this topic and see mixed opinions. Oh well, I guess it's just another oil thread.
If it were me and mine, just run 5w40 year round no matter the criteria. It covers all bases. I see oil temps in the 240°+ range towing, so 5w40 full synthetic is ideal. Yes, it is harder to get ahold of locally for most, but it’s just a couple days wait online and a better option for not much more than Motorcraft 10w30 at Walmart. Just my .02
 
Reply
Old Feb 2, 2023 | 12:57 PM
  #13  
hillduty's Avatar
hillduty
Thread Starter
|
5th Wheeling
Joined: Nov 2022
Posts: 26
Likes: 7
Originally Posted by rufushusky
Given the fact you have a F250, I am assuming you are looking at 10k to 10.8k of GVW giving you something around 2300-2700 pounds of payload. Google informed me your slide in tips the scales at 2641 pounds all by itself. So before you fuel up the truck your already pretty close to GVW. To me that is severe use, trips the third to last bullet point from above. IMHO of course so that and 3 bucks can't even get you coffee.
Thank you so much for your "HO" I have decided to switch to Rottella T6 5w30 for the reason you mentioned and 2 more bullets that get me. This was my inclination all along, it's just that I still have a gallon of 10w30 in the garage and I am squeaky cheap.
 
Reply
Old Feb 2, 2023 | 01:29 PM
  #14  
chadstickpoindexter's Avatar
chadstickpoindexter
Lead Driver
Community Builder
Liked
Loved
Top Answer: 3
Joined: May 2021
Posts: 5,796
Likes: 3,449
From: Uh oh, CA
I switched over to Rotella T6 5W40 at 5k miles in on my 22 6.7. I tow our small 6000 lb camper, and most often times I am filling up with B20. It says right on the oil fill cap: "Severe Duty/Bio Fuel, SAE 5W40 API CJ4" so that's what I do.
 
Reply
Old Feb 2, 2023 | 01:40 PM
  #15  
hillduty's Avatar
hillduty
Thread Starter
|
5th Wheeling
Joined: Nov 2022
Posts: 26
Likes: 7
Thanks to all who offered comments. Mission accomplished.
 
Reply



All times are GMT -5. The time now is 09:26 PM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE