Building A Fuel Efficient Jeep - Project Mileage Master, Part 1
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Like nearly all older Jeep 4.0L tubular exhaust manifolds, this one was cracked. We were thinking that since only half of one tube was still welded to the collector, maybe our O2 sensor was getting bad readings. We welded up as much as we could, but there was about a third of the total area we couldn't get to between the oil pan and the manifold. We saw no change in mileage from the repair. View Related Article
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Jeep Commander Research
Get information on specs, safety features, pricing, and equipment options for the new Jeep Commander. The Commander gets 9 mpg in the city and 13 on the highway. It has had 4 vehicle recalls, which can give you an idea about its reliability. Also check out the Jeep Compass and the Jeep Grand Cherokee.
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