80,000-kilometer maintenance notes_vehicles, vehicles

80,000-kilometer maintenance notes

September 7, 2024

Over sixty or eighty thousand, no more, no less comfortable
Anyway, let’s keep a running account first.
1. Basic B guarantee. Change oil, air compartment, spark plug.
2. Change brake fluid and change differential fluid.

1. B guarantee part.
The condition of the spark plug 40,000 kilometers later (natural light effect in the picture above, flash effect in the picture below)

The cabin was still dry and no oil and gas leaks were found. Especially since the solenoid valve cover after being re-glued has no oil and gas leakage.

Mercedes didn’t know which engine oil it used, but it probably pumped it cleanly this time. It took a total of about 7.5 liters to meet the standard; another 6 spark plugs were dried out.

2. Change differential fluid and brake fluid
The oil discharged from the rear differential is still clean

The oil discharged from the front differential is obviously dirty

Oil filling of the rear differential is simple and convenient (the version with strict filling volume has said many times, it is not cumbersome here)

It is a bit difficult to remove the right front half shaft from the oil filling port of the front differential. After negotiation, it is prepared according to the filling volume of 0.8L, and about 0.1 liter will be discharged after filling. The figure below is an interface found to facilitate injecting differential oil.

Changing brake oil is simple, but it takes much longer than changing differential oil. The main reason is that it takes a long time to drain out the original brake oil and clean the oil pipes one by one, and then it takes a long time to step on the brakes deeply after adding new oil. Check the oil outlet of each wheel repeatedly multiple times for leakage. The picture below shows after emptying the original brake fluid, using a vacuum machine to evacuate the residual oil in the pipeline while continuing to add new brake fluid.