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  1. 8

    Radiator mounting screws spinning in place

    I’m trying to remove my old radiator, but 3 of the four mounting screws are spinning in place. It looks like there is a bracket on the back of each one which is supposed to be immobile but which has broken, so that the screws just spin and do not loosen. How can I remove these screws? Here is a...
  2. 8

    What are these extra holes in my new radiator?

    I got a new radiator for my 6.9, when I opened the box I saw two extra holes that are not on the existing radiator. Here is the bottom of the existing radiator: And here is the bottom of the new radiator: What are the extra two holes? Can I use this radiator?
  3. 8

    Can I Use Universal Coolant in my 6.9?

    I always use conventional green coolant in my 6.9, which has a couple of pinhole leaks in the radiator and now needs to be filled. That conventional green is a little hard to find out here, though, and I need to add coolant without making a long trip right now. Is there any reason not to use...
  4. 8

    Hard brake pedal

    So my brakes on my ‘87 6.9 were fine until this morning; now suddenly the brake pedal is hard and riding high and it’s very difficult to stop the truck. Any idea what this could be or how to fix it?
  5. 8

    Can I use Fuel Oil in a 6.9?

    I have changed my home heating from fuel oil to a heat pump, but I have about 250 gallons of fuel oil left in my tank. Could I use this leftover fuel oil in my 6.9?
  6. 8

    What to do with this fuel filter?

    This fuel filter sits up against the driver’s cab side of the engine compartment of my ‘87 6.9 - what should I do with it, maintenance-wise? Do I need to drain it? If so, how? When should I replace it? From the writing I can see on the filter, it looks like it says to drain it every two oil...

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