Bumper to Bumper Radio, the car guys on KTAR, 92.3 FM in Phoenix, AZ, broadcast every Saturday from 11:00 am to noon. On this show, Dave Riccio of Tri-City Transmission in Tempe, AZ and Matt Allen of Virginia Auto Service in Phoenix, AZ talks about the different reasons that the quality and cost of oil changes may vary for your vehicle. Also on this show:

• Why the type and price of oil changes will vary depending on the car you drive.
• How synthetic oil has changed the market dynamics of the oil industry.
• How often you should have your oil changed, regardless of mileage.
• Why you should never wait too long to have your oil changed.
• How oil filters affect the quality of your car’s drivability.
• How flood damage affects the inner-workings of a vehicle.
• 1985 Buick Regal: My car feels as if it’s shifting straight from 1st to 3rd gear. With a vehicle of this age, what can you recommend I do?
• 2006 Mercedes R350: I recently had some transmission work done on my vehicle. Since then, I still notice some rough shifting. Any idea as to what I should ask my shop when I take it back in?
• 1979 Chevrolet G30: Could you give me any information on preventing a vehicle like mine from overheating?
• 2007 Volkswagen Jetta: I’ve been having an issue with my windshield controls. Could you recommend a shop to me that’s in my area?
• 2011 Dodge Nitro: How extensive of a job is it to fix an evaporative leak?
• 2003 Honda Odyssey: My car makes a lot of squeaking noises while rolling over speed bumps. What is the main contributor to this?

Cars talked about on this show are the 1985 Buick Regal, 2006 Mercedes R350, 1979 Chevrolet G30, 2007 Volkswagen Jetta, and the 2011 Dodge Nitro.