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After a tune up, a new air cleaner, properly inflated tires, a fresh oil change. I went from 19 to 20, to about 20 to 22. The thing about the car is, the only way you get the best milage is keeping it at 55 mph. I have done 60 and 65 and I have gotten worse milage. Also setting the cruise control really boosted my gas, but when your on the highway, the more that gas pedal goes down, the more gas you will suck.

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13y ago
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Q: What is the Highway gas mileage for a 1987 Chrysler Fifth Ave V8 318 engine?
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