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Engine Oil

2147 Views 6 Replies 4 Participants Last post by  karlduke
What Engine oil do you guys use in your 6.7's? is it worth the Extra $$ to use the Ford XO-5W40-5QSD SAE 5W-40 Full Synthetic Diesel Motor Oil. they sure are proud of that stuff it's quite a bit more $$ then the good ol Rotella T6. any pros and cons?
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I use Rotella T6 with Archoil AR9100, seems to be working great for me.
Some like the Vavoline 5w40 full synthetic oil that is on sale at NAPA for approx 19 a gallon.
Larrgh, oils are like women. Everyone has their "fav" =)
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