Since the 1950s, the popular calculation of how old a dog was âin human yearsâ has been that 1 dog year is the equivalent of 7 human ones. Even though this formula has been around for a surprisingly long time, the reality is not so cut-and-dried. That doesnât stop many people from defaulting to this traditional calculation.
Oil Changes. I have a 2006 Hyundai Sonata with 56,000 miles on it. The owners manual says to change the oil every 7500 miles. The place I take the car to for the oil change says every 3000 miles. Friends of mine say every 3000 miles because it is mainly driven in the city.
The Prius, to maintain the warranty, must have oil and oil filter changes every 5000 miles, and larger services (such as air filter changes) every 15,000 miles. I personally change my oil in both Toyotas every 3000 miles and rotate the tires every other oil change (every 6000). I do stick with the 15,000 mile intervals for the bigger 15k services. I also go to my local dealership for all service, because I know the techs, the owner of the dealership, and everyone in-between.