Roth Automotive Science › Forums › Fuel Economy › Cylinder Deactivation

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  • October 24, 2026 at 10:20 am #743
    jai_
    Participant

    Hi Dave what are your thoughts on Cylinder deactivation; is this reliable if keeping car long term or can it cause damage to cylinder heads from going hot/cold?

    October 31, 2026 at 8:58 am #746
    admin
    Keymaster

    Cylinder deactivation is reliable. When cylinders are deactivated, the coolant still circulates around all of the cylinders (all parts of the engine) so there is no significant thermal stress created.

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