Join Date: Oct 2012
Location: Hungary, Europe
'91 Caprice mileage
First of all, sorry for my poor english.
Well, i just bought a '91 Chevy Caprice Classic with 305 5.0L Tbi engine. The car bought from a dealer, and the car was started in June (last time). The first start was normally, everything ok, a/c, brakes, abs, etc...
But the consumption is disgraceful, on highway 15MPG, in the city.... less than 10MPG, with normal driving. I think, the average should be over 20MPG, or not?
The old engine oil is still in the car. But on this week i change the oil, filters (oil, air, and fuel), and the spark plugs. But if it isn't help to increase the MPG (i think it isn't help), then what should i do?
I already talked with 2 car mechanic about this. The first said, because of the high mileage (but only 130k miles on it), i cannot increase the mpg. The second said, if the oil and filters change not help, then we should check the all sensors, because of one or more sensors' fault can result more consumption.
Whats your opinion, idea?