It is recommended that you change your car's air filter once a year or every 15.000 miles if you live in an averagely dusty area. But, if you can check it once in a while and replace it as soon as it needs it this would be much better. Checking it is a very easy thing to do and replace it is not complicated once you learn how to do it.

Used cars are answer to avoiding this big hit in depreciation, but many people still finance used car. Let's take a look at how you can buy used vehicles even when you have very little to start with.

Let's assume you wanted to purchase a 2005 Accord for $20,990 and financed it for 6 years at 5.95%. The payment would be $341.85 per month for a total amount paid over life of loan of $24,613.40. That includes $3,623.40 in interest paid.

Since you had decided that you could afford $341.85 payment to finance company, we assume that you can afford to pay yourself $341.85 into a savings account.

We round off this savings and do not account for any interest and assume that you save $4,000 each year. We will also assume that you can drive your current jalopy for one more year while you save this money.

January 2006 you now have $4,000 saved and can afford to buy a 1992 Honda Accord.

January 2007 you can sell 1992 for $1,400, add another $4,000 to it and buy a 1995 Honda Accord.

January 2008 you can sell 1995 for $2,000, add another $4,000 to it and buy a 1997 Honda Accord.

January 2009 you can sell 1997 for $2,300, add another $4,000 to it and buy a 1999 Honda Accord.

January 2010 you can sell 1999 for $2,600, add another $4,000 to it and buy a 2000 Honda Accord.

In January 2011 you have reached value of used car purchases where selling 2000 and adding $4,000 to it will not substantially upgrade your car, so you continue to save.