07 Nov 2020. B2 service update (2 year / 30,000 km)
Odo - 20,500 km.
As mentioned earlier, the car was due for service in November. This is generally the bigger service, B2.
Mercedes service are A & B, the number followed by it is the number of years ownership. There seems to be surprisingly little information about service contents on the internet for this car. So I am taking some effort to write about this in detail.
I had two options in Pune - B U Bhandari and Silver Star (Trinity motors, under a new ownership). I had heard good things about Silver Star but BU B is very close to where I stay. However, they were slow in response for getting stuff done and I just wanted to try a new workshop for the experience.
Both the service centres gave comparable quotes - however Silver Star gave a higher initial number. Upon informing that it feels higher, it was revised (both were in the range of 66-68k including all taxes)
This service includes the following
1. Oil, oil filter
2. Engine air filter
3. AC filters (there are two AC filters - dust filter and fine particle filter)
4. Brake fluid
5. Fuel filter
6. Windshield washer fluid
I was not very keen to replace the fuel filter. Given that the replace recommendation is 30k km and my vehicle having done 20k only, it made sense to retain it. Also, manufacturer recommendations are conservative. I know because I have worked on heavy duty engine fuel systems right from design to production. Other positive contributor is that I have been filling at mostly well-known fuel stations and the likelihood of poor quality fuel at those fuel stations is relatively low.
The service advisor from BU Bhandari never called me back. But was able to have a meaningful discussion with the Silver Star service advisor and he was OK with this. This was one of the main reason for me to go them - even if it meant spending the whole day there driving 25+ kms one way in horrible Wagholi and Nagar road traffic.
Other reason was they were OK with me hanging out near the car and take some photos. I hope posting them here will not cause a future issues for them.
I was extremely impressed with the setup, professionalism, courtesy and friendliness. I really hope they do well in future and keep focus on customer centric behavior.
My appointment was scheduled at 930, but I got late and reached at 1030. Hence, work began by about 1045.
Arrival area
I love how they cover all the controls and seats with a plastic protective sheet.
Car is taken into service bay. There are about 20-30 such service bays and those many cars can be worked on individually.
With the plastic engine cover removed. The actual engine is really tightly packaged. You can tell how much they must have toiled in putting everything together. I cannot imagine the BS VI machines. They will be further compact.
1. We start with battery health check. All OK here. 12.4V.
2. Coolant check. All OK. It was full. We tried to check the density with a Hydrometer, but the device wasn't working for some reason. It looked fine and I didn't feel the need to check the specific gravity etc. If it ain't broke, I ain't fixing it.
Windshield water topped up. I have kept the shampoo with me. I feel the water gets too soapy and leaves an annoying residue on the car.
Will top it up after 3-4k kms.
3. Air filters (engine air filter, AC filters)
3.1 Engine air intake filter was especially dirty. There were all sorts of dead insects, dirt, etc. I am glad this was changed.
Filter removal is relatively easy. Those small screws hold the intake plumbing in place. There's some kind of ECM mounted on it. It seems a weak point. If the threads get stripped etc. this will be a pain to change / fix.
3.2 Dust filter - clearly dirty, but I have seen worse. No point in retaining it.
3.3 Fine particle filter - same as above.
New part numbers
Dust filter
Fine particle filter
I seem to have missed taking pic of the 3rd filter box.
4. Oil change
Mercedes is using Sinopec oil which is MB branded. I am guessing it is 15W40 or 20W50, CK4 fully synthetic. Maybe someone can confirm?
Oil was drained the "traditional way" by removing the drain plug. I guess there is a machine which does this too. My understanding is it a more efficient way of doing it. The sump guard had to be removed - its a sturdy part and is made of metal - I won't be surprised if its called panzerplatte (nod to wrc fans)
The filter body is very nicely accessible and this work can be done at home for sure. You need the tool to hold the oil filter. Torque is 25 Nm.
Oil filter. I find it interesting that you don't change the whole body. It's only the oil filter element that gets replaced along with those 3 little O rings.
Care must be taken when these o rings are installed. Start with the biggest one first. Remember where it fits before removing the old one if you are into DIY.
New filter element installed.
Oil being poured. Be mindful about the quantity to be added. It must be filled up to max amount - 6.5 litres in this case. There seems to be a misunderstanding that anything between Min-Max is OK, especially mid way. I'd want to ensure it is filled to the high mark. It could be the difference in a good engine and a great engine.
Oil filter part:
5. Underbody check
Wheels were removed before lifting the car up.
Car is lifted on the hoist.
Front differential - looks clean.
Front brake caliper - looks good.
It was 1:15 by this time. I had seen a Domino's pizza about 200 meters away while coming in and had decided in the morning that I am having margherita pizza. Had a nice time in their waiting lounge which is a small room, but comfortable one where you can see your car being worked on.
After lunch progress continued in part 2.