First, I try to follow the maintenance instructions in the owners manual.
Second, I use the same fluids when I change them. I change the oil every 5,000 miles. I know lots of people say you must go 3,000 miles, but I have never had any issues with it.
It has a big effect on performance when maintained properly. Changing the air filter, oil filter,and oil regularly will keep your car getting the best mileage out of your engine. A service at any quick lube usually runs about $40. You can buy the oil and filter for $10-$20 unless you use synthetic oils(these do have benefits).
The items needed to change your oil can be picked up rather cheaply. This jack was only $10 after rebate. A must to get under a low car.(I would NEVER get under a jacked up vehicle without using jack stands)Then, most parts stores have adds for filters and oils together. They are usually advertised as 1 filter and 5 quarts of oil for $10 -$15. Some like the Peak in this picture were free after rebate. The only other thing needed is a drain pan, the correct wrench for the drain plug and a filter wrench. Always get rid of oil properly after you are done. All parts stores will take your used oil.
I know in the beginning it is a little more expensive to buy the tools needed, but these tools only get purchased once. Then they start to pay themselves off each time you use them. I cannot even imagine how much money I save doing my maintenance and repair on my own.
