Gear box oil/ transmission oil change

Eddie fh

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Hi I’m trying to work out when the oil needs changing on my b class 2.2d 2017 , I’ve called two different dealers but neither replied, it’s a 7 speeds auto . Many thanks eddie
 

steveq

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Hi,

It should be in your service book which is part of your handbook pack.
 
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Eddie fh

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Hi,

It should be in your service book which is part of your handbook pack.
Hi , I’ll have a look don’t think I’ve got a service book but I’ve got a hand book so will have a read through it
 

steveq

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My C Class came with a black wallet which had the handbook and a few smaller booklets. One of those is the Service Book.
It would have been where the Service Stamps would have been before they went electronic.
I don't know what comes with the B Class.
The service booklet is probably available online somewhere or maybe your MB dealer could get / show you one.

Mine says what should be done at the various mileages / times.
 

V6Matty

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They did away with the physical service book a few years ago (with the facelift 204 iirc) so the OP won’t have one.

Service miles on the 722.9 were around 70k I believe but most people do it around 40k.
 

Tony Dyson

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steveq

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They did away with the physical service book a few years ago (with the facelift 204 iirc) so the OP won’t have one.

Service miles on the 722.9 were around 70k I believe but most people do it around 40k.

I should have called it the Maintenance Book and not the Service Book.
 

steveq

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Looking at the American Maintenance Book for the C Class from the very useful link above, they say that the Automatic Gearbox should have the oil and filter changed at 60,000miles. That would be for the 7G+ with Stop/Start.

Not sure about the B Class.
 
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Eddie fh

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Going off the link the 2017 gla and glc it’s 30k
 

Terrykal

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They did away with the physical service book a few years ago (with the facelift 204 iirc) so the OP won’t have one.

Service miles on the 722.9 were around 70k I believe but most people do it around 40k.

just to clarify, in what concerns the old generation 7g / 722.9 my manual (cls500 w219) says at 40k miles and this was followed from the merc dealer, according to the stamps of the service book.
maybe the 70k you are mentioning would be for the newer version 7g+ ?
 

V6Matty

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just to clarify, in what concerns the old generation 7g / 722.9 my manual (cls500 w219) says at 40k miles and this was followed from the merc dealer, according to the stamps of the service book.
maybe the 70k you are mentioning would be for the newer version 7g+ ?
The original 7g was meant to be done at 40k then sealed for life, MB eventually did a u-turn on that and said then do every 70k, the 7g+ I think is set at about 60k now but could be wrong
 

Tony Dyson

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My 7G+ is due at 77,500 Miles or 5 Years and confirmed this is still the case by MB earlier this Year.
 

Terrykal

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V6Matty yes 100% correct it mentions once (the 1st) @40k and then sealed for life. I didn't know about the 70k though. thank you.
buying a car with gearbox service was essential for me. i found it a joke with bmw that advises lifetime oil for auto gearboxes and differentials.
from my car's history i saw mb dealer gearbox service @40k and then after many years and @72k again a gearbox service with VGS valve removal for cleaning up etc from an independent merc specialist.
my car now has 85k miles and i was planning to service it again (the gearbox) at 100k. would it worth it or i should leave it more and do it at 120k? now its a weekend car but plan is to be my daily car to enjoy it more
 

Wighty

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V6Matty yes 100% correct it mentions once (the 1st) @40k and then sealed for life. I didn't know about the 70k though. thank you.
buying a car with gearbox service was essential for me. i found it a joke with bmw that advises lifetime oil for auto gearboxes and differentials.
from my car's history i saw mb dealer gearbox service @40k and then after many years and @72k again a gearbox service with VGS valve removal for cleaning up etc from an independent merc specialist.
my car now has 85k miles and i was planning to service it again (the gearbox) at 100k. would it worth it or i should leave it more and do it at 120k? now its a weekend car but plan is to be my daily car to enjoy it more
I would think about 110k if it's going to become your daily , no point leaving it if she's a keeper
 

V6Matty

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+1 on that, worth doing every couple of years if your keeping the car, you never get more than a 65% change anyway unless you drain the TC, even then you probably still only get 85% fresh oil as the pipes and rad hold a surprising amount.
 

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