When I met my husband, I was head over heels for him. He was sweet, smart, an engineer…little did I realize how the engineer stuff leaks into your everyday life. One day early in our marriage, he says to me, “We need to go to the store to get a little notebook for your car.”
“Why?” I asked, hesitant to know the answer.
“We need to track every time you fill up how many miles you are getting and then also have a place to record when we change the oil or do any work on the car,” he replied like everyone did it.
In my head I am thinking, “Crazy! A little OCD…don't you think?” but because I was so in love, I went with it. (I am still major in love, just more willing to stand my ground these days when engineering interferes with being practical)
It took me almost 6 months to get the hang of it. As I kept this car journal, I started to see the beauty of knowing what my gas mileage was. There were times we could see that maybe we weren't getting the best mileage and we would pop the hood to see what needed to be changed or fixed.
There it is! The notebook. This notebook has been with us since 2005. I could hardly believe my eyes! It's been awhile since I had opened and flipped through all of the pages. Each page was recorded so simply. The date…odometer reading…mileage for this tank of gas…total gallons filled up.
On this first page, you can see that we had to replace an air filter and then also the oil and air filter. From oil change to the next was a little over 8,000 miles. Waaayyy more than the manufacturer recommends. Some years our car was more tenderly cared for than others. Let's look and see if we can calculate the average miles per gallon. I am going to look at the third line. I use the gallons on the second line because that is what the third line was driving on. Does that make sense?
If I want, I could find the average for this entire page by adding up all of the miles and totaling it, then adding up all of the gallons and totaling it. Then we'll divide. Let's see how close we get to the average on line three.
There is lots of ways we could analyze the data on this page. How many days between fill ups? How many gallons on average do I put in? What is the farthest I've driven on one tank of gas?
Because we have this car journal, we are able to estimate when we were going to need to replace tires, change the oil, or be aware that something might need repair before it does any significant damage. This gives us peace of mind because we could actively save for an emergency or repair because we knew what our cars habits were. In fact, the fuel gauge inside the gas tank busted. Our car still worked, we just didn't have a nice gauge to tell us when to fill up. Now we rely heavily on this notebook and our odometer to tell us when it's time to fill up and because we know the average amount of miles we can get out of a tank, we know when we've got to gas up.
Who else uses this kind of knowledge?
Car engineers and manufacturers
They have to provide the public with all kinds of fancy information about cars. In fact, the math and science behind miles per gallon and how it relates to a cars performance is so exact, they can program it right into a car and alert the driver when it's time to get the oil changed or stop and get some gas.
Public Transportation
Budgeting for gas to move a population takes a lot of data and care that allows them to predict and prepare for repairs and changing routes to save money.
Just about anyone
Anyone who owns or uses an automobile should be interested in knowing the performance of their car. It just may save you a headache or two in the future!
Great post, Adrianne! Thanks so much for linking up with us this morning! We hope you join us next month too!! LOVE that your husband is “CDO” that was always my favorite way to describe my quirkiness!
Mathematically yours,
Jamie aka MissMathDork!
I am SO not letting my husband read this post! It has, as far as I know, never occurred to him to keep a little book on gas mileage and I don’t want him getting any ideas. What a great post though for real life math. I loved it!!
Lynn
Fun in the Fours
yes, I showed it to my husband and he said,”We need to do a little notebook for your van again.” I got him to stop when we bought it because it tells us everything…grrr. Almost regretting showing this post to him! Thanks for having me link up. It was fun.
You must be one of the most patient people who ever lived! Or perhaps I am one of the least patient. This is the kind of thing I would love to do but would never find the time, sounds like it works though.
Well I guess this is quite a smart idea to keep tabs of the activities with your car. Though some might raise a brow on why they should be listing everything, seeing how this routine has a lot of benefits for you. It’s fine to assume that every car owner should do this too. Well, not if they have a sharp memory that they would never forget when to change oil, replace parts, or even to monitor their car’s mileage.
Forrest @ Radiator.com
Personally (it might be a little controversial) I think the driving test should be much more stringent about car maintenance. There are things like changing a tyre and checking your engine which should be common knowledge. Its amazing how many people have to call out services to change a Tyre they have in their boot….
Knowing your car is part of being a responsible car owner. It’s not enough that you give it regular maintenance, you also have to know the basics. Keeping a record will help you track the simplest detail about your car. Keep it up!
It turns out, it’s actually a thing! My dad keeps a car journal for the same reason — to keep track of the miles and whatnot. I was never thrilled with the idea, but I’ve been witness to how helpful it is in keeping the car in good shape. Apparently, we all have that one guy in our life. 🙂