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99 & up 7.3L Power Stroke Engine & Drivetrain

Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
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  • 123M
  • 355K
  • 123M

6.0L Power Stroke Engine and Drivetrain

Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.
  • 238K
  • 88.6M
  • 238K
  • 88.6M

99 & up Upgrades and Aftermarket - 7.3L Engine

Upgrading or adding OEM or aftermarket equipment to your 1999-Up Super Duty or Excursion with 7.3L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
  • 225K
  • 45.2M
  • 225K
  • 45.2M

Power Strokes 1994-1997 General

Technical discussion of topics related to vehicles powered by the Power Stroke engine in 1994 through 1997 models.
  • 202K
  • 47.7M
  • 202K
  • 47.7M

7.3L IDI Diesels (Not Power Strokes)

Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.
  • 162K
  • 46.6M
  • 162K
  • 46.6M
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  1. 6.7L dpf delete pros and cons

    6.7L Upgrades and Aftermarket - Engine
    I am thinking about doing a dpf delete on my new 6.7. what's the fuel milage gains? Will it run as good as the 6.4 does? Any problems? According to the programmer websites your only looking at 30 more hp over the non dpf delete tunes is it worth it? I want to hear anything you have to say.
  2. What's the best oil to use in 6.4?

    6.4L Power Stroke Engine and Drivetrain
    I have '08 F250 6.4 liter and it's time for the 2nd oil change (10k miles). 1st one was at the dealer. I am a huge fan of Mobil 1, but I'm not sure what oil meets the CJ4 spec requirements and won't plug up my DPF.
  3. DEF Date Codes and API Certification

    6.7L Power Stroke Engine and Drivetrain
    A date code, or expiration date can be found on just about any package of DEF. This is called out in the specification for DEF: ISO 22241. Most DEF manufacturers are certified by the API. The API is the American Petroleum Institute and it has a voluntary certification program for DEF. The API...
  4. '2017 F250 Superduty poor MPG

    2017 & Up General Questions
    2017 F250 Superduty poor MPG Bought a new 2017 ford F250 super duty 6.7 L diesel this year. Started out with great fuel mileage 19.5 to 20.8 on the highway. Did the first oil change at 3000 miles because we had a long trip ahead of us. During the trip which went from Texas to Canada and...
  5. Per dealership don't use synthetic oil in 6.7L??

    6.7L Power Stroke Engine and Drivetrain
    I normally change my own oil and I use Shell Rotella T6. I realize from reading several of the posts on here there are many of you as well that use this oil. I just went to Walmart and picked up my oil and filter and my oil change costs me about $90. I decided to call the dealership and see...
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