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Yes, I also see on forms. Several people using it in their 7.3. one even knew of this "not recommended problem" said his truck loves it. Would never change! I believe that is what I will try. Thanks for your suggestion

This was copied and pasted from Mobils website. Under products description. This is under Mobil delvac 1300 super 15w40 If it was recommended for turbo's, They wouldn't have said this! Diesel applications using older and naturally aspirated conventional designs

I saw that too. So knowing this. What should I do? I think I should at least stay with Mobil. Since I've only used Mobil delvac 1300 for 270,000 miles. Mobil 1 5w40 turbo diesel truck seems to fit for the 7.3 although not specifically recommend by ford?

At Mobils web site. They break down the This was copied and pasted from Mobils web site. In their description for Mobil delvac 1300 super 15w40 This seem to indicate it's NOT for use in turbocharged diesels Diesel applications using older and naturally aspirated conventional designs

Go to the Mobil website. Entered my truck. 97 F250 7.3. Came back with the Ford spec number. Said we have no oil that is offered in North America that meets this requirement. This can be verified in my forms. Where Mobil oil and power stroke diesels are mentioned

I have been using Mobil delvac 1300 super 15w40 in my 1997 F250 7.3 since I purchased in new. Now has 270,000 on the clock. Change every 4000-5000 miles. No problems at all! To my surprise. Ford doesn't recommend it. Mobil doesn't recommend it in Turbo diesels. I want to stick to Mobil, but...