So having recently acquired my L405, even though it has full main dealer service history, apart from the last one in Feb 2020, for piece of mind, I replaced all of the fluids and filters.

Yesterday I changed:
Both air filters (2 x Mann C35126)
Fuel filter (Mahle KC521)
Engine oil and filter (Shell Helix AF-L & Mahle OX153/7D2)
Transfer box fluid (Smith and Allan 0753 transfer fluid)
Front and rear diff oils (Smith and Allan Geartech fully synthetic 75w90)
Dynamic response reservoir and fluid (Genuine LR reservoir & Smith and Allan Cold Climate PSF)
Cabin filter (Mahle LAO490)

Just the gearbox fluid outstanding, which I'll do at least a triple drop and refill next weekend. I would have done it this weekend but I'm still waiting for my 20 litre drum of Mannol AG60 to turn up from Germany.

What I couldn't believe was that the diff oil according to the service schedule is 160k or 10 years Whilst mine wasn't the worst I'd ever seen, I certainly wouldn't like to keep in there for another 100k!

The intention is to keep up my preventative maintenance regime through changing the engine oil and filter every 6 months, single drop and refill of the gearbox and dynamic response fluid every year with diffs and transfer box every 2 or 3 years. I think that should stand me in good stead for the future, fingers crossed. Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

Last edited by knwatkins on 9th Nov 2020 9:49am. Edited 1 time in total

on my tdv6 the diff oils service is at 80k or 60months..are you sure of your figures? ... - .- -.




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That's only for the rear locking diff, Stan. For open diffs, it's 10 years or 160k. Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

 ... - .- -.




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Agree with your service strategy, too often better than take a chance. I’ve seen them really bad at 50K, but just changed all my fluids at 60k, the diffs were perfect, but the T/F box was very dark and looked well used so glad I did it

Yeah, I agree, Dave. My diff fluid had life left in it and so did the transfer box to be honest, but it just makes me feel a lot better having nice, clean, slippery goodness in there. Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

Interesting because certainly if you have an 80k service at a main dealer it looks like you'll get the diff oil changed regardless of open or locking.

Reason I say this is mine (open diff) went for its 80k service at the main dealer earlier in the year and the fixed price servicing had the Rear Diff oil change as a service item and the oil was priced into the service. When I picked it up its listed on the invoice as having been done so I was going to query your comment earlier about it only being the Locking diff needing the oil changed.

So I dug the paperwork out tonight and at first glance on the 80k service schedule the mechanic ticks it says - Renew differential oil - it was only just now when I read it a bit closer and it says RENEW LOCKING DIFFERENTIAL OIL. It was still done and invoiced though. Current Fleet:-
2018 Discovery 5 3.0 HSE
2021 Ford Ranger Wildtrack
2019 Ford Mustang Bullitt 5.0 V8
1993 Defender 90 200TDI Pickup

Gone - not forgotten
2016 L405 4.4 SDV8 Vogue SE
2012 L322 4.4 Westminster
2004 L322 4.4 V8 Autobiography LE
2000 P38 RR 4.0 HSE (ex Clarkson test car)

That's interesting. I assume because it was built into the fixed price servicing, they just changed it anyway. I wonder if anyone else has had a similar experience?

According to the service sheets on the wiki, it's definitely 80000 miles / 60 months for the rear electronic locking diff and 160000 miles / 120 months for the front and rear non-locking open diffs...

http://www.fullfatrr.com/gallery/albums/us...sheets.pdf Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

What are the oil quantities for the Diffs (open) and Transfer box?
Need to replace mins as I don't know when they were last done.

Thanks

Ivan 2013 Vogue SE SDV8
2013 Freelander 2 SD4 HSE Luxury

from memory the diffs are around half a litre but the exact quantity are in the WM... ... - .- -.




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 2013 Vogue SE SDV8
2013 Freelander 2 SD4 HSE Luxury

Hi Ivan, here you go...

Front Diff 0.54 Litres (dry fill) or 0.51 (wet fill)
Rear Open Diff 0.85 litres (dry fill) or 0.82 litres (wet fill)
Transfer Box 1.5 Litres Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

Thanks Kev 2013 Vogue SE SDV8
2013 Freelander 2 SD4 HSE Luxury

So, my 20 litres of Mannol AG60 turned up this week from Germany and this morning I braved the rain and replaced the fluid in the gearbox.
I always buy my ATF from these guys because their prices are excellent. £72 in this case, including delivery. https://www.motor-oel-guenstig.de/

Click image to enlarge

Thanks all for the info. I have two questions:
1. Has anybody changed Dynamic Response Filter, in the manual, it recommended to change it every 5 years, I wasn't able to find it
2. How to change Fuel Filter, where to locate it? Manual says change every 10 years, is it worth of changing at 55K?

Thanks