Answer by Robert S. Barnes for How to improve fuel economy in high-mileage car?
Since no one's mentioned it, try replacing the PCV valve. You probably have more fuel blowby in a higher mileage car since the rings are probably more worn, and it's the PCV valve which let's that fuel...
View ArticleAnswer by Allan Osborne for How to improve fuel economy in high-mileage car?
Lets say your car is upto date with its servicing, and maintenance too. Your car is now older and more worn then it was when you first got it. It can only be less efficient in itself. Now you can...
View ArticleAnswer by Nick for How to improve fuel economy in high-mileage car?
Remove any unneeded weight. If you have 100lbs of junk in the car, it will make a small, but noticeable difference. This will not only improve mileage, but braking, accelerating, handling as well.
View ArticleAnswer by kahbou for How to improve fuel economy in high-mileage car?
Some good points have been given already especially as far correct spark plugs and correct fuel go. Some other points, unfortunately, I can only describe as regurgitated 'car-care' sales drivel. I'm...
View ArticleAnswer by TMN for How to improve fuel economy in high-mileage car?
To add to what @rwheadon said, also consider replacing your wheel bearings and getting an alignment. Not as simple as "inflate your tires to the max recommended PSI", but not onerous either.
View ArticleAnswer by rwheadon for How to improve fuel economy in high-mileage car?
The key things you can to to keep your fuel economy:Keep it tuned up: for spark plugs and wires, go with the manufacturer recommended brands/default ranges. Additionally, you'll want to make sure you...
View ArticleHow to improve fuel economy in high-mileage car?
I'm driving an 2003 Acura TL 3.2 with 177K miles on it.I bought the car with 110K miles on it.It seems to me that the car is not getting the same fuel economy that it did when I acquired it. I used to...
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