I think an article that answers a particular need for a person is going to be the most well received. That may be a how-to article, such as how to change the spark plugs in your car, or an informative article, such as one about things you can do to make your car run better.
Perhaps a combination of the two is needed. In the example above, the second article may mention "get a tune-up", and could then link to the how-to article that provides step by step instructions for doing that tune-up. The tune-up article could link to the other one as "one of the steps to get your car running better".