what oil to get - Ford Powerstroke Diesel Forum
General Diesel Discussion Discuss everything else pertaining to Diesel Pickups.

LinkBack Thread Tools Display Modes
post #1 of 5 Old 09-17-2013, 06:51 PM Thread Starter
Powerstroke.org Fanatic
Join Date: Aug 2013
Location: brighton co
Posts: 125
Thanks: 0
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
what oil to get

first time diesel owner. 02 f250 7.3 122k. My current oil change is almost due. I drive this truck 3-4k miles a year. Live in the Denver area. Can get some cold temps thru the winter. I want to run synthetic. Should I go with a 15w40, or go with a 5w40? Some posts say that a 5w40 is just as good as running a 15w40. Most of the mileage will come in the summer months towing close to 11k pounds. Can get to upper 90's here, if not hit 100. trouble is finding a 15w40 synthetic oil. Would think that a 15w40 might be better than a 5w40 with high temps. What one to pick. Oil would be inline with ford requirements. Thanks for the help. Thanks to all that helped me fix a bad solenoid with the air going to defrost.
sean andreano is offline  
Sponsored Links
post #2 of 5 Old 09-17-2013, 07:23 PM
Compression Ignition Addict
Join Date: Jan 2010
Posts: 454
Thanks: 0
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
The 15w is heavier/thicker than 5w. 5w better for cold starts. Both are 40 so same grade.
Engine Oil
Grade 1......CH-4
SAE 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil (AMEQT)
Synthetic 15W-40 Diesel Oil (DMEQT)
Synthetic 15W40 OE Diesel Oil (OEDQT)
-9 To 90 F......10W-30
Above 10 F......15W-40
Below 30 F......5W-30
Below 0 F......0W-30

1984 F-350 XLT 4x4 4spd. 6.9 (project)
1996 F-250 XLT 4x4 5spd. 7.3
2001 Excursion XLT 4x4 Auto 7.3
AMSOILdealer is offline  
post #3 of 5 Old 09-21-2013, 12:13 AM
Compression Ignition Addict
Int.Tech04's Avatar
Join Date: Sep 2012
Location: Knoxville TN
Posts: 250
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Go with Rotella 15w-40 or mobile delvac 15w-40. If you want oil for a colder climate, go with Rotella 5w-40. I run the T6 5w-40 synthetic with a spin on filter (OEM filter removed due to oil cooler relocation) and my oil still looked new at 5k.

-Tyler- -Navistar Technician-
2004 F250 CCSB FX4 6.0 - XDP EGR delete, BPD Oil Cooler Relocation, SCT Livewire TS, 315/75/16 Falken Wildpeak A/T's, Rough Country 4in, stock DP with 4in straight pipe.
Int.Tech04 is offline  
post #4 of 5 Old 09-21-2013, 03:25 AM
Powerstroke.org Fanatic
Join Date: Sep 2013
Posts: 109
Thanks: 2
Thanked 3 Times in 3 Posts
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
Feedback Score: 0 reviews
I ran Amsoil 15w40 year round in Duramax's and 7.3's. Good oil great performance. If you want that 7.3 to start in cold weather make sure your batteries are good and throw a set of "Good" glow plugs in it. There are some better than stock performers out there.
golfpineacres is offline  
post #5 of 5 Old 09-21-2013, 03:38 AM
Gun Nut

Rodslinger's Avatar
Join Date: Jul 2005
Location: Katy, Texas
Posts: 14,386
Thanks: 18
Thanked 83 Times in 65 Posts
Mentioned: 16 Post(s)
Quoted: 149 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to Rodslinger
You're going to get a TON of response on this one. We have a TON of threads about them.
I've run Amsoil since early on and last time my buddy had my rig apart he said it looked "new" inside. And I'm HARD on mine.

'05 F250, CC, FX4, 6.0 PSD

"It is foolish and wrong to mourn the men who died. Rather we should thank God that such men lived."
- General George S. Patton, Jr

Please support our troops!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Rodslinger is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome