Blown head gaskets, on the other hand, are a more common and easily remedied problem. Head gasket failure can be caused by a number of factors — preignition due to bad or low-octane gas ...

Scotty Kilmer said thick smoke coming from the back of a petrol and diesel car could signify a major head gasket failure. Other signs include foamy coolant and bubbles coming from the engine bay ...

Plan ahead for unexpected repair costs A spokesman said: "A head gasket failure can be a costly repair, but financial planning can make it more manageable. Setting aside savings in a car ...