There is an alternative to fixing a bad heater core, but it isn't as cheap or easy as using an electric heater.
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I live in my car and never use a 'dangerous' winter item to stay warm - my recommendation works up to eight times longer
Locomotive engineering : a practical journal of railway motive power and rolling stock . WILLIAM C. BAKER, FIRE-PROOF BAKER CAR HEATER AS THE EXPRESS CAR SAFE. The Only Alternative for the
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