Is this a good informative speech topic?

I need to write an informative speech for class that has to be 4-6 minutes long... I%26#039;m thinking of writing it on the topic %26quot;Changing your own oil is easy%26quot; do you think this is a good topic that I can make at least 4 minutes out of?|||4 minutes easy. Excellent topic. Just add in a few safety points with each step. If you need more material, throw in some price comparisons with quick lubes and auto dealers and the cost savings. Good topic.|||Can you make four minutes out of it? I%26#039;d suggest you would have to talk really, really slowly.