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  1. JasonH

    Fuel Grade discussion

    Use top tier fuel always. Regular or premium is your preference but you'll lose hp on regular because the engine pulls timing and reduces boost. Some people don't care but for me it was noticeable even at part throttle. You'll also get slightly better mpg on premium. For me it was like 1...
  2. JasonH

    engine coolant overtemp

    Did you bleed the air out of the system? Did it happen immediately after changing the water pump and coolant? The heater core gets air trapped in it. Ford Tech Makuloco has a procedure for getting the air out.
  3. JasonH

    CDF around 3

    The engine is spooling the turbos going uphill, while on the downhill there's less airflow so they aren't really doing much, even at higher RPM. The turbos will heat both the coolant and the oil when they get hot.
  4. JasonH

    Catalytic Converter Help - 2017 Expedition XLT 3.5 Turbo

    Any replacement cat would need to be CARB approved. CARB publishes the list of approved converters. The cat was probably contaminated from oil making it into the charge air. When I was in CA, the inspection stations didn't automatically check for replacement parts, but things may have changed. I...
  5. JasonH

    Oil extractors do not work on 3.5 Ecoboost oil pans

    A power ratchet makes removing the splash guard screws easier. Yes, you're still on your back. But it just zips the screws right out.
  6. JasonH

    Vibration cured!

    Nice to hear of a dealership actually addressing a problem rather than punting.
  7. JasonH

    Asking for a friend (Really) ...

    The dipstick is on top of the transmission, next to the exhaust. The transmission needs to be at operating temperature to properly check fluid levels. I haven't had any transmission issues so I don't know what would show up with a code reader, but you can probably search for 6R80 transmission...
  8. JasonH

    2022–2024 Expedition Limited/MAX buyer advice (HD Tow required, winter driving, prefer physical HVAC)

    Another thing to consider. I think the CDF drum issue wasn't addressed until the 2023 model year, so I would avoid anything older to reduce risk of transmission or phaser issues.
  9. JasonH

    2022–2024 Expedition Limited/MAX buyer advice (HD Tow required, winter driving, prefer physical HVAC)

    My recollection is that CCD only comes on trims equipped with 22" wheels. If that is the case, it may limit the selection of suitable tires for towing. Not sure how well CCD works if you go down to a smaller wheel. It's likely tuned for the heavier unsprung weight of the 22" wheel. But...
  10. JasonH

    New from Texas

    Congrats on the purchase. What are you towing? Search for the tips on weight distribution hitch setup previously posted here.
  11. JasonH

    Changed plugs and noticed this?

    The gaskets fail and oil seeps into the plug wells. You can check by pulling the coil and shining a light into the well. The torque on the plugs is very low. My recollection is around 133 lb-inch. You can get away with it for awhile, but eventually you'll want to replace them because the oil can...
  12. JasonH

    2021 3.5l EB consuming lots of oil

    PCV valve replaced? Oil on the ground? Smoke out the rear?
  13. JasonH

    Towing handling

    Load D tires and more pressure.
  14. JasonH

    Is an aftermarket intercooler really worth it for towing??

    Its boost causing the elevated temps. Have to use the lower gears. Anecdotally, an oil cooler helps because the turbos are really heating up the oil when they're running hard. All that heat gets dumped into the coolant.
  15. JasonH

    Valve Cover leaking

    The plastic covers crack, need to include the replacement cost.
  16. JasonH

    Valve Cover leaking

    Depends on how bad the leak is. Is it dripping on anything hot? Are you running low on oil between changes?
  17. JasonH

    Overheating Issue

    The 4th gen has a 10 speed. Gears 8, 9, and 10 are all overdrive gears. You can lock out the upper gears by pressing down on the gear selector repeatedly. I asked about the mileage because my engine ran hot when my water pump was failing. But that didn't happen until well beyond 100,000 miles...
  18. JasonH

    Overheating Issue

    Try using a lower gear and getting RPM up a bit. The engine will generate a lot of boost to tow in an overdrive gear. More boost means more heat. If you're in a headwind, the engine could be spooling the turbos and you would not even know it's working very hard. You can monitor boost using a...
  19. JasonH

    Overheating Issue

    How many miles on the vehicle and which gears? Premium fuel?
  20. JasonH

    Emissions Issues with P0430

    Did you ever get this resolved? I have a P0430 I'll need to get fixed by the ned of the month for emissions testing. You used Magnaflow cats? I heard they're good quality, but seems like results may vary.
  21. JasonH

    What oil are you using

    I have. I posted my last one here. Others have shared theirs as well. https://bobistheoilguy.com/forums/threads/ecoboost-uoa-40k-miles-mobil-1-at-4-9k-miles.265046/ https://bobistheoilguy.com/forums/threads/ecoboost-3-5-v6-shearing-comparo-3-oils-pu-once.286943/...
  22. JasonH

    What oil are you using

    I thought this was the case as well, but it turns out that some of the 0W weights often use a superior base stock, PAO or Group 5, that make the VII less of an issue. It's been discussed ad nauseum on Bob is the oil guy. The other issue with 30wt on this engine is that fuel dilution can result...
  23. JasonH

    4th Generation Oil Gauge

    I posted my Torque setup before. Very handy for monitoring engine parameters.
  24. JasonH

    What oil are you using

    I've used Magnatec and GTX 5W-30, but recently switched to Edge 5W-40 Euro when I tried to fix my timing code issue. Fuel dilution can cause 30WT to shear down to 20WT within a normal OCI. A lot of the OCI varies based on how the vehicle is used. Short trips, cold weather, towing, etc. may...
  25. JasonH

    Lowering an Expedition a little

    Someone used coilsprings.com to get a set. https://www.expeditionforum.com/threads/2013-el-limited-squatting-when-towing.58583/post-531863

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