How often should I take my car in for a service?

It's less a question of age than mileage. Different people have different beliefs about oil and oil services. We stand by the tried and true 3000 miles between oil services if you are using the conventional 5W30 oil that is manufacturer-specified for your truck. A lot can happen in 3000 miles, especially with a higher mileage/older vehicle, so this gives the opportunity to catch any developing problems before they become drastically expensive. The shop servicing the vehicle should check condition on all fluids and top them off, lube the chassis as applicable, and hopefully lubricate your door locks and hinges to keep them from squeaking and binding up. They should check the vehicle over and make recommendations for any further services you might need. We don't recommend spending extra money on so-called "high mileage" oil; a high quality conventional 5W30 like Valvoline should be enough, especially if you beef it up with a can of BG's MOA.