This page last reviewed March 14, 2013
| Certified Auxiliary Fuel Tanks |
| Auxiliary fuel tanks are subject to California's anti-tampering laws. Installation of auxiliary fuel tanks on emission controlled vehicles is prohibited unless the auxiliary fuel tanks have been evaluated and certified by the Air Resources Board. |
| Executive Orders for auxiliary fuel tanks that meet OBD II system requirements:
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| Here is a list of approved auxiliary fuel tanks dated April 1, 1990. |