Great idea to take pics. I have the receipts, but will start adding pics as well.Congrats. These really are quite simple to maintain ... once you've done it once.
FWIW, I take pictures of the process and the odometer to put in the car's book (along with receipts) as a record of maintenance and running costs.
You can buy a % water meter. There are tables indicating boiling points vs % water for various fluids.
If you race you will want to flush the fluid more frequently. Heating the fluid increase the air pushed out of (during heating) and pulled into (during cooling) the system. This adds moisture. Additionally, racing heats to an extreme, and you really don't want to boil the fluid.
Two years is pretty much the max whether driving or not. Moisture not only creates lower boiling points, but can cause corrosion.
Brake fluid never used to be flushed. And every time a car came in for a brake job I needed to hone the cylinders (drum) or rebuild the pistons (disc).
Using my tool I find a water increase of about 1% per year. It is generally considered that 2% is about as high as you want to get. So two years is a good target in general.
But I agree that most would never know or see a difference going three or even four years.
Then again if you have a warranty issue it would be best to stay current.
What is the brake bleeder kit you used? What brake fluid did you use?I just did the Service B on my 2015 GLA250. I also replaced the brake fluid based on the mileage. The brake bleeder kit I used made it a pretty simple one-person job. Pretty excited about the money I saved doing this myself.
I have the oil extracting unit as well. But when I used that I tested for how well it did by then putting the car up on the lift and draining any remaining oil from the plug. There was quite a bit of oil left to drain. I posted the results and they should be available on a search.
How do you dispose of the used brake fluid?
Here the county recycling center will take automotive fluids only once a year.Put it into the bottles used to renew the system and take it to the local hazardous waste disposal.
Actually I have a bunch of leftover 5 gallon buckets from paint and joint compound. I dump oil and other fluids into those and haul them when I get enough full ones (20 gallon drop off limit at our center). I make 3 or 4 trips a year since I change oil and do other work for friends as well.