ML/GL - would you change diffs and transfer box oils?

ML/GL - would you change diffs and transfer box oils?

Author
Discussion

Watchman

Original Poster:

6,391 posts

245 months

Saturday 16th November 2019
quotequote all
Well, I took my X164 into Mercedes on Wednesday for the highest majorest most-massivest service they do, for which they have already quoted me £700-ish. They will change the engine oil, replace the brake fluid, and I really don't know what else but there's a reason why I want this super-service which I'll explain below.

On top of the service items I have requested they replace the gearbox oil, the front and rear diff oil, and the transfer case oil. They said there's some super low-temp diff oil I could have, and I do want it (explained below), so they ordered some in.

Also I want them to sort out the noisy underbody protection plates which clunk under braking, and my aircon must be leaking because it doesn't hold any gas for more than 3-weeks.

Finally, an MoT.


They called me to say I had no coolant in my engine - only water which is annoying considering I have always had my car serviced by (what I thought was) reputable agents. To drain the system and refill with highly-concentrated coolant (my request, again explained below) was extra to the service.

And he said the turbo seals needed replacing. I had them replaced there only 2-years ago, so that was a freebie.


They haven't finished the work yet. I'll get the car back on Monday... I think. Apparently the aircon is going to require hoses and a condenser and it'll cost "about a grand". On top of everything else. Erk..!!

However... you know, I am not too upset. I love my car. I don't know if all the X164s have height adjustable air suspension, a low range transfer case, and centre and rear diff locks, or the under body protection plates, but mine does and it's frickin' epic.

It's a 61-reg with 85K miles on the clock and (here's the reference from above), I'm taking it to the Arctic circle on 7th Feb along with a small group of other SUVs. This is why I need low temp fluids and why I'm prepared to pay to get it spot-on now.

I already have a spare set of wheels shod with brand new winter tyres in the garage. I'll put them on a week before I go.

We're driving from Shropshire, Worcestershire, Warwickshire and Gloucestershire to the channel tunnel, then to Copenhagen, across the Oresund bridge, up through Sweden then west into Norway through the longest road tunnel in the world (Laerdal), to the Atlantic coastal road, then the Trollstigen, and finally to the Arctic circle visitor's centre before we turn around and come home.

My GL wi be joined by a Disco 2, a Disco 4, a 4.6 litre X5, a 40D X5, and possibly an L322 Range Rover (yet to confirm).

I know the cost of the road trip. Any guesses for how much the work at Merc will cost? I'll find out Monday night.

AC43

11,484 posts

208 months

Sunday 17th November 2019
quotequote all
andyleeds said:
can you add the tpms sensors to any tyre?

cheers
Yes. They are part of the valve assembly that you can insert in any wheel. But I think if you swap them round/have two sets you'll need to code them in.

When I went from 17's to 18's on my E Class the fitters went to great pains to make sure the right valves were in the right rims - ie is the same position as before.

Otherwise I guess you need to somehow train COMAND as to which sensor is in which wheel.

In my case, after changing tyre & rim width & tyre profile, everything worked fine. Having said all that that I went from one exact OEM fitment for that car to another one.

Watchman

Original Poster:

6,391 posts

245 months

Tuesday 26th November 2019
quotequote all
Well, I have the car back from Mercedes now, and it's been through quite a lot. They had it for a week - it needed quite a lot of time spending on it by all accounts. Plus, they had to send off for parts which took time to deliver.

I requested the most comprehensive service, for which I was quoted £700-ish (can't remember - or maybe I just didn't want to hear it), which includes engine oil and filter, brake fluid change and a list of other stuff as long as my arm.

I also provided them with a long list of extras including the repair of my aircon (new pipes and condenser), gearbox and torque converter fluid, front and rear diffs fluid, transfer case fluid, and sort out my noisy underbody protection plates.

And finally, they called to say my coolant was little more than water, so they drained the system and filled with a high concentration coolant, suitable for my Arctic circle road trip in Feb.

It was expensive, sure, but it has given me peace of mind that it ought to get there and back. And it drives better in little, barely-perceptable ways.