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Fuel Additive - 1993 Ford Escort prior to smog test?

What is the best fuel additive I can use in my 1993 Ford Escort prior to smog test to help it pass?
Answer:

Using a fuel additive in your Ford Escort can be helpful in lowering emission levels. Additives generally clean carbon deposits in your engine's intake and exhaust paths, allowing for both fuel and air to flow freely within. This does help lower emission levels and improve combustion. However it should be noted, a single use will not improve much. Fuel additive are intended to be used during the course of an engine's lifetime, not necessary remove build-up in one use. To answer your question... If we had a choice we would choose Chevron w/ Techron brand, but use 3 tank fulls prior to getting a smog test. posted by SmogTips Support

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