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Old 05-23-2012, 11:15 AM
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Yes.....a newby Oil question

Hey dudes, I know i am gonna get slapped, but I just bought a 2012 6.7 and was wondering what is the best oil and grade. I live in West Texas and it can get over 105 F here but rarely gets below 20.

I used Delo 15w-40 in my 6.4 and had good results

any suggestions appreciated
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Old 05-23-2012, 11:34 AM
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I use the motorcraft syn in all my changes... of course i bought the service agreement with the truck so it dont cost me a dime...
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Old 05-23-2012, 01:43 PM
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Book says for best mpg use ford motocraft syn 5-20 and the wal-mart carries it. Right now Im use rotella t6 syn 5-40 an seems good.
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Old 05-23-2012, 02:39 PM
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Quote:
Originally Posted by border bandit32 View Post
Hey dudes, I know i am gonna get slapped, but I just bought a 2012 6.7 and was wondering what is the best oil and grade. I live in West Texas and it can get over 105 F here but rarely gets below 20.

I used Delo 15w-40 in my 6.4 and had good results

any suggestions appreciated
I run Delo 15/40 in my 6.7. I have ran it in every diesel that I have had with good results.You can buy it by the case reasonably at Costco. As long as the temperature is above 20 degrees it meets Fords requirements. If you want to spend the money 5/40 synthetic is probably the best way to go. You will get many opinions and its purely a personal choice as long as the oil meets Fords specifications. My dealer recommended Motorcraft 10/30 diesel oil all the time.
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Old 05-23-2012, 02:45 PM
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Originally Posted by bbc109758 View Post
Book says for best mpg use ford motocraft syn 5-20 and the wal-mart carries it. Right now Im use rotella t6 syn 5-40 an seems good.

There is NO 5w-20 diesel rated motor oil, evidently you were looking at the gasoline engine equipped truck spec.


The safest route is to go by one of the owners manual recommended grade in the diesel supplement, there will be two or three different grades.
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Old 05-23-2012, 10:45 PM
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Sorry I was wrong it was in the diesel section of oil and didnt notice 5 20 for gasoline. Oh well not the first time I was wrong.
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Old 05-24-2012, 11:05 AM
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So I Guess Delo 15w-40 will work for the 6.7 too?
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Old 05-24-2012, 11:37 AM
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15-40 should be fine for regular duty..i live in East Texas and run 5-40 synthetic (mobile Delvac)..which is suggested for extreme duty. Most of my driving is highway, and unloaded..i run the synthetic as a bit of insurance i guess..and longer drain intervals than dino.
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Old 05-24-2012, 08:48 PM
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Run what is suggested by ford which is 5-40 they paid guys in white lab coats alot of money to figure out which oil to run and the oils have different viscosities which in turn could affect they way it flows through the oil clearances for things like the connecting rods which could lead to either high oil pressure for the oil being to thick or low oil pressure from the oil being to thin


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