Nissan Patrol 2004: Why does the radiator keep breaking?

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My 2004 Nissan Patrol 3.0-litre turbo diesel has gone through three radiators in six months. I was told a stray current could cause it. Is that a common problem, or could it be a result of a new motor being fitted?

Answered by CarsGuide

25 January 2011

Graham Smith

It could be a stray current, or it could be that the concentration of glycol in the coolant is too low. There should be 30 percent glycol; if it’s too low the radiator can corrode. More likely it’s a stray current, probably caused by a bad earth on an accessory that’s been fitted to the vehicle, or it could be a bad earth the engine and the body.

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