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 talk about the difference statistically between what consumers think is happening during an oil change and what mechanics think. Also on this show:

• Things that are often overlooked during an oil change.
• Consequences you may experience without regularly changing your oil.
• Ways that oil and the oil change process has evolved over time.
• 2013 GMC Sierra: I tow a large trailer with my truck on a regular basis. Is there any extra routine maintenance I should be keeping in mind because of this?
• 2008 Toyota Prius: My dealership says not to ever change my transmission fluid- does this sound right for my vehicle?
• 2007 Mazda RX8: This car has been sitting for 6-7 months. After realizing a dead battery, are there other things I need to keep in mind to get it back in good driving condition?
• 2006 Honda Odyssey: The transmission in my car went out on a trip North, but after towing it home I found that it worked okay again for shorter trips. What is causing it to break down after a certain amount of driving?
• 2004 Jeep Grand Cherokee: I’ve had a series of bad experiences relating to my check engine light. Do you have advice that will keep me from over-paying for diagnostic services?
• 2000 Ford F-350: My car begins revving high while towing a trailer, but runs great normally. What could be causing this?
• 1998 Ford E-150: What are your thoughts on stop-leak fluids?

Cars talked about on this show are the 2015 Toyota Camry, 2013 GMC Sierra, 2008 Toyota Prius, 2007 Mazda RX8, 2006 Honda Odyssey, 2004 Jeep Grand Cherokee, 2000 Ford F-350, 1990 Ford E-150.