I usually go over the cars in the Fall after the Summer trips and enjoyment. I just completed the verification of the 2006 Odyssey and the 2013 Prius C. All in good shape. Changed the oil in both along with the coolants.
If I remember right, we have had both cars for about 6 years. This is my first coolant change for these cars. I remember when we had to replace coolant every year in the old days. While the cars are up on the ramps, I always inspect the undercarriage. All was good.
YouTube sure helps even though most of the videos are done by back yard mechanics. Both cars used different coolants and also different oil weights. Since the Prius is 10 years old, I researched the battery life which said 10 years or 100,000 to 150,000 miles. I found a site that had the whole refurbished battery pack for $1,900 with upgraded new batteries installed. And they would give instructions on how to install. It looks like it would not be hard. Such a deal. We still get 46 mpg and are at about 80,000 miles on the car. We really like the little car.
Next, I need to replace the head gaskets in my riding Cub Cadet lawnmower. I think it is a 2004 and it is the tougher 2000 series. A really nice mower over the years. I bought it when it was 2 years old. It is in great shape but I can hear the head gasket leak when I turn the mower off.
Then off to the motorhome which needs new coolant and the hydraulic / steering proportional valve cleaned. The motorhome overheats if it is 90 degrees outside and climbing a hill. The rig is 29 years old and the bolts on the proportional valve are rusty. So, there will be some adventure in working on this issue.