Miles per gallon?

kyler said

Hello,

I have a 1966 Valiant 200 with a slant-6 225, 1 barrel carb, and 3-speed automatic transmission. What kind of mileage should I be getting? When I bought the car, I was under the impression it would be somewhere around 18-22 for an average. As it is, I have been calculating 10-11. Why am I getting such poor mileage? It just doesn't make sense to me.

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These cars never got 18-22 mpg, even when new. 15 mpg on the high end and 12 is normal average in mixed driving. 10 mpg in the city is common. None of the more than dozen 225 slants I've owned ever got better than 15mpg, and that was only after looong trips at steady speeds.

I think you are trying to check your mileage too frequently. Average it out over about 500 hundred miles to see what you are really getting. Too much error in a 130 mile trip.