thermostat and efan settings

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by ManBearPig, Mar 18, 2019.

  1. ManBearPig

    ManBearPig Well-Known Member

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    I ordered a Lund 93 octane tune for my bone stock 2016 GT a few years ago. By default, they set the Efans to come on at a lower temp than STP k and as a result, the fans ran almost nonstop. I had them return the fan settings to stock and have been fine since.

    I’m now about to do a round of modifications and will be getting a tune revision. I’m considering putting in a Reisch 170* thermostat. If I put in a cooler stat and have Lund use their default efan settings, can I expect the fans to run a reasonable amount, or will they still run more than a completely stock car?

    Thanks
     
  2. Zelek

    Zelek Well-Known Member

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    The tunes are designed around having the 170 thermostat already which is why you had to get it changed in the first place. They won't be running all the time like it was with the stock thermostat so to answer your question they will run a reasonable amount without running all the time.

    CHT's stay around 189-195.
     
  3. ChiTownStang26

    ChiTownStang26 Well-Known Member

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    @Zelek

    I'm in the same boat as Mr Gore ... my only question is come next winter and I have a 170 tstat in will I have issues with the extreme cold temps chicago can see like -25*

    Also what type of coolant do I use to replace what's drained, I heard you have to use a certain type.

    Thanks
     
  4. Zelek

    Zelek Well-Known Member

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    I flushed mine with the Prestone pre mixed stuff. Same as Dex Cool. Does the same thing the Ford one does a lot cheaper. If you're just topping off, I would use the Ford motorcraft one.

    You won't have issues in the extreme cold. This thermostat is only 10 degrees cooler than the stock one.
     
    ChiTownStang26 likes this.
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