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Re: Is there a device to identify the wrong coolant in engines?
Posted to Technical Theory Forum on 11/3/2009 8 Replies

Hi Nick,

Toyota, Honda, Subaru, and Nissan coolants all have a PH of about 8. Some of the aftermarket green coolants have a PH of 11. So if I find green coolant with a PH of 11 in a Subaru or Nissan, I figure it's the wrong stuff. Of course Honda coolant is ... Login to read more.

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