which oil - Ford Powerstroke Diesel Forum
General 6.7 Discussion General 6.7 Discussion

User Tag List

LinkBack Thread Tools Display Modes
post #1 of 2 Old 01-12-2011, 06:20 PM Thread Starter
The Warden
twin200's Avatar
Join Date: Nov 2010
Location: Trinity NC
Posts: 568
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
which oil

I was talking to my diesel guy today about oil for the 6.7. We both have always run 15w40 rotella in our 7.3's. He told me ford says 5w40 for the 6.7 and that the computer is using this viscocity to make calulations for oil change intervals. I almost forgot(synthetic). Does anyone know different

2000 F-350 7.3 4wd cc,dually lariat
afe intake,programmer. rear airbags
2011 F350 6.7 cc,4wd shortbox lariat
Tinted windows Gray bedliner(diy)
Tool box Bull bar
Front aux lights Rear aux lights
Onboard air Train horns
Billet grille LED bed lights
twin200 is offline  
Sponsored Links
post #2 of 2 Old 01-12-2011, 08:07 PM
Powerstroke.org Fanatic
CascadeF250's Avatar
Join Date: Dec 2010
Location: Washington state
Posts: 95
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 3
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Smile oil viscosity

The manual says you can use 15/40 at temperatures above plus 20 degrees. Below that is recommends you use 5/40 weight. I also would like to run Delo 400 15/40 but am not sure if I should. I have not changed oil yet and have 4400 miles on the truck. I would like to run 15/40 all year long and not have to worry about going to a lighter oil in winter. The manual recommends 5/40 for severe duty.
CascadeF250 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

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