6.0l PSD Oil Thread
Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
Alright, I'll bite... My manual says it's preferable to run 10w40 I think it is under 30 degrees and 15w40 is preferable over 30 or so. Any thoughts? Everyone keeps saying they always run Rotella. Isn't that only 15w40? I'm getting ready for my first change and I've never owned a diesel before. I'm trying to weed out all the BS and I'll more than likely go with what the engineers at Ford said to put in the owners manual.
Post Fiend
Joined: Apr 2004
Posts: 19,098
Likes: 8
From: Great State of Texas
Don't believe everthing you readin the owner's manual.
Some trucks with the 6.0 may exhibit hard starting, rough running and lack of power in cold temperatures, particularly on a cold start. This may be due to the oil being to thick for the operating conditions. Ford is recommending to use the following oils for the listed operating temperature.
SAE 15W-40 is the preferred oil above 30 degrees, but it is acceptable for use down to 10 degrees, and is recommended for towing down to this temperature.
SAE 10W-30 is the preferred weight between -10 to 30 degrees.
<LI>SAE 5W-30 and 5W-40 is acceptable for use below 30 degrees, and 0W-30 is acceptable below zero.
(All temperatures are in Fahrenheit.)
The oil used should meet Ford's specification of WSS-M2C171-D or API CI-4 PLUS, CI-4/SL or DHD-1. CH-4 is acceptable for use if CI-4 PLUS is not available. TSB #05-16-6.
Keep in mind that CI-4 oil is designed for the increased soot contamination and higher coolant temperatures of cooled EGR systems on a diesel; CH-4 is not.
Nowhere does the TSB mention synthetic versus conventional oil recomendations or ranges.
Ford has not released anything recommending NOT to use a specific brand of oil.
Some trucks with the 6.0 may exhibit hard starting, rough running and lack of power in cold temperatures, particularly on a cold start. This may be due to the oil being to thick for the operating conditions. Ford is recommending to use the following oils for the listed operating temperature.
SAE 15W-40 is the preferred oil above 30 degrees, but it is acceptable for use down to 10 degrees, and is recommended for towing down to this temperature.
SAE 10W-30 is the preferred weight between -10 to 30 degrees.
<LI>SAE 5W-30 and 5W-40 is acceptable for use below 30 degrees, and 0W-30 is acceptable below zero.
(All temperatures are in Fahrenheit.)
The oil used should meet Ford's specification of WSS-M2C171-D or API CI-4 PLUS, CI-4/SL or DHD-1. CH-4 is acceptable for use if CI-4 PLUS is not available. TSB #05-16-6.
Keep in mind that CI-4 oil is designed for the increased soot contamination and higher coolant temperatures of cooled EGR systems on a diesel; CH-4 is not.
Nowhere does the TSB mention synthetic versus conventional oil recomendations or ranges.
Ford has not released anything recommending NOT to use a specific brand of oil.
Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
What would make me dispute the manual? There is a hell of a lot of engineering R&D dollars behind what they write in there. I believe none of what I hear and half of what I see..., but I have to go with something for the oil. The only thing I see that I wrote incorrectly was the cold weather weight oil. It looks like it should be 10w/30 not 40 like I wrote. So with the Rotella, it should be alright in the colder weather with 15w40 because it's synthetic right? The manual was only talking about conventional oils I'm sure.
Post Fiend
Joined: Apr 2004
Posts: 19,098
Likes: 8
From: Great State of Texas
Hey, I wasn't slamming you or the manual for crying out loud.
I did not even suggest that you posted anything incorrectly.
I only posted what Ford published in their own TSB...after the manual was published as an assistance to you.
If you took any other way...then I can't help you.
I did not even suggest that you posted anything incorrectly.
I only posted what Ford published in their own TSB...after the manual was published as an assistance to you.
If you took any other way...then I can't help you.
Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
Hey, the prozac is at the store bud.... Never took it as a slam or anything else. Read my post, didn't mean to put anything in there that would offend you... I just responded to what you said and asked a question. RELAX!
Post Fiend
Joined: Apr 2004
Posts: 19,098
Likes: 8
From: Great State of Texas
No Prozac needed here...bud.
I re-read your post a # of times before I responded and came up with the same conclusion each time. Albeit, the wrong conclusion. That's the problem, at times, with the written word.
Regardless, the Prozac comment is a little out of line.
Good luck with your oil decision. If you follow the the Ford TSB with Dino or Syn your truck will be fine.
Adiós
I re-read your post a # of times before I responded and came up with the same conclusion each time. Albeit, the wrong conclusion. That's the problem, at times, with the written word.
Regardless, the Prozac comment is a little out of line.
Good luck with your oil decision. If you follow the the Ford TSB with Dino or Syn your truck will be fine.
Adiós
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Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
Originally Posted by ford390gashog
only the 5w40 rotella is synthetic. the 15w40 is not just make sure it is CI-4+ rated and any oil with that rating is a very good oil.
Thanks for the reply Rusty, but I think I'm going to stick with what I'm seeing as mainstream oils.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
the mystik oils are great oils with nice add packs. but i have a hard time finding them. their oils are CI-4+. they are made by citgo. motorcraft is made by connoco. delvac 1300 and delo are aslo good oils.
FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
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From: 3rd Rock
Originally Posted by dsldrvr
Hello, Mystik oils are made by Mystik, owned by Citgo. Citgo oils are made by Citgo.
You can find them at most Tractor Supply Co. stores if you have those out there.
You can find them at most Tractor Supply Co. stores if you have those out there.
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