Recently my transmission cooler had to be changed because the oil leaked and went into.the radiator. The radiator too was flushed out of any of the oil I recently got it fixed and the mechanic( family friend ) said to use distilled water in my radiator instead of coolant.

As i read and heard from several people water rust and corrodes the engine, is he wrong or right?

I live in the middle east & the sentra has about 118500 kms on it so far.

Kindly advise should i put water or coolant in the radiator as im in a dilemma

Thanks for the responses

  • 66NickS@alien.topBEnglish
    1·
    10 months ago

    Water is better for cooling, but runs the risk of freezing depending on temperatures. This is because water is better at absorbing the heat from the hot engine components and releasing the heat into the radiator fins for faster/better cooling. Race cars generally use distilled water only and no coolant/antifreeze due to the improved cooling AND the fact that if the coolant/antifreeze gets on the racetrack it’s VERY slick.

    If your environmental temperatures support the need for greater cooling without the risk of freezing, make sure you have the proper additives. There are specific concentrated fluids that will assist with lubrication of the water pump and limit corrosion.

    One of the brands I’m familiar with is called “Water Wetter”. One 12oz bottle is appropriate for most normal passenger car cooling systems between 3-5 gallons.

  • ontheroadtonull@alien.topBEnglish
    1·
    10 months ago

    You’re right. The coolant prevents rust and corrosion and even distilled water does not. Coolant also lubricates the pump better than water.