Quote:
Originally Posted by ryanheacox
I used to buy bottles made by Gunk, it was a white liquid. Can't find it anymore though.
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I used to use that too - still have a bottle or two around somewhere. I stopped using it when I found that it was just like any other anti rust/ lubricant additive I had seen up till then. It attacks the hoses and makes them swell and go mushy. I now use another american product called "Motor Medic" made by Niteo Products LLC. It is added to the cooling system in addition to your usual coolant. No effect on hoses and lasts forever.