Increasing MPGs without Buying a Prius
Q: I have a 2001 Grand Marquis with 37,000 miles, which averages about 19.5 mpg the way I drive. Because of my disabilities, getting in and out of the smaller, more efficient, greener cars is difficult and does not meet my needs. Is there a fuel or any additive that really works that will increase my mpg? Many claim to improve fuel efficiency, performance, reduce engine wear and a long list of other claims, but I don’t want to put something in the fuel or oil that will harm the engine or make the situation worse.

A: I am not aware of any fuel or oil additives that provide any measurable fuel economy improvements. One exception: If you have dirty fuel injectors or carboned-up valves, a good dose of fuel injection cleaner can restore your vehicle’s previous economy. But nothing will improve your mileage. If it did, it would already be in there.

Reattaching Rearview Mirrors on the Cheap
Q: I have a 2001 Saturn SC1 and, a few months ago, I accidentally knocked off the left side-view mirror. The mirror is still hanging by a wire, but I was wondering if there’s anything out there that I can use to reattach the mirror until I can get the money together to buy a replacement. I have tried duct-tape, Gorilla glue and even a 60-second epoxy that a person at my local auto store suggested. I was also wondering what you would also think is the degree of difficulty to replacing the whole unit when I get the part. Is it something that a weekend mechanic can do, or is it something that is better left to the professionals?

A: Replacing the mirror is a very simple procedure. You can follow my step-by-step plans and slideshow by clicking here.

 
Shutting Off the Oil Light
Q: The engine maintenance light (not the check engine light) on my 2005 Toyota Corolla activated, indicating that it was time for an oil change. But now that I’ve changed the oil, the light won’t turn off. I purchased a Haynes Maintenance Manual, and it doesn’t have any information regarding engine maintenance lights. Any tips?

A: Straight from the service manual...

Reset the system by the following procedure:

1. Turn the ignition key to the "OFF" position with the odometer reading shown.

2. Turn the ignition key to the "ON" position while holding down the trip meter reset knob. Hold down the knob for at least 5 seconds. The odometer indicates "000000" and the light goes off. If the system fails to reset, the light will continue flashing.

NOTE: Other vehicles may use a totally different procedure to reset this indicator.