Reply With QuoteMost definitely Not the sort of thing you expect to find in a healthy diff
Master
New to me L320 MY08 RRS TDV8. Full (dealer) service history and ~112k kms. Has had a very on-road city life with no real hardship (no towing, no off-road, etc). I'm still in the process of getting RWC so have driven it barely at all. However I immediately noted a mild whirry-rumble that I initially diagnosed as bearing noise (axle, wheels, etc). My background is as a Driveline Engineer so I am tuned to these things naturally. Posting here as my L320 and a L319 are essentially identical for these axle parts. Non e-diff, by the way
So... I drained and refilled the front and rear diffs yesterday. Both had about the correct quality of oil (good sign) but both were full of metal flake (really bad sign). Magnet on both sump plugs were jam-packed beyond capacity with metal fur, with lots more left inside the diff itself (feeling around with my finger). Good layer of metal paste around the drain plug inside. I suspect the oil has never been changed (nothing in the comprehensive history suggests it). Condition of front oil was poor (dark, smelly, streaky, etc). The condition of the rear oil was a bit better but clearly overdue. As an aside, thankfully the transfer case oil was in good condition, just a bit tired. Front breather cap/filter is the original, problematic type, so the updated part has now been ordered from Mario - no evidence of pressurisation or blocking at this point.
I haven't jacked up the wheels and free spun them to get a feel for it as yet as I did the oil change on ramps. But driving it up and down my street after changing oils showed that the noise was still very much there, but seemed slightly changed as if I had affected it slightly with the oil change.
Pics attached, as everyone loves a good set of pics.... First two pics are the rear, second two are front diff. Drain pan spotlessly clean before draining in each case.
So, what are my options? Replace both diffs? Get them rebuilt or change-over? Good sources / mechanics / etc? Ignore issue and crank up the (excellent Harmon Kardon) stereo and hope for the best? Vehicle is being prepped for a trip up the Hay River in July, so not really what I needed but better here than there...
Rear Plug.jpgRear Oil.jpgFront Oil.jpgFront plug.jpg
DiscoClax
'94 D1 3dr Aegean Blue - 300ci stroker RV8, 4HP24 & Compushift, usual bar-work, various APT gear, 235/85 M/Ts, 3deg arms, Detroit lockers, $$$$, etc.
'08 RRS TDV8 Rimini Red - 285/60R18 Falken AT3Ws, Rock slider-steps, APT full under-protection, Mitch Hitch, Tradesman rack, Traxide DBS, Gap IID
OldBushie
SupporterMost definitely Not the sort of thing you expect to find in a healthy diff
You only get one shot at life, Aim well
2004 D2 "S" V8 auto, with a few Mods gone
2007 79 Series Landcruiser V8 Ute, With a few Mods.
4.6m Quintrex boat
20' Jayco Expanda caravan gone
Swaggie
Unfortunately all too common. Dealer servicing leaves a lot to be desired. We have replaced many front and rear diffs in these.
A D4 rear diff is a straight bolt in BTW.
Jc
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
OldBushie
SupporterWhat is the problem?Originally Posted by justinc
Is the Wrong oil being used or the "So Called" extended service intervals causing the problem?
You only get one shot at life, Aim well
2004 D2 "S" V8 auto, with a few Mods gone
2007 79 Series Landcruiser V8 Ute, With a few Mods.
4.6m Quintrex boat
20' Jayco Expanda caravan gone
Swaggie
A 'dealer serviced' vehicle hmm.
i just hope the auto has had an oil change and flush?
Maybe contact the dealer and see what they say,maybe there is some comeback(on LR),particularly if it has had all the services done at the right K's and time.
The vehicle mileage is not huge.
Swaggie
Never been changed. Lost count of how many we see like this. 10 years and over 100k is just too long. I would be changing them at 60k and 5 years at absolute minimum. And hell yes that trans needs a service NOW!!!
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
Swaggie
When i got the current l322 tdv8 at 83k the diffs and transfer case oils got changed the first week i had it. Trans getting done at the service due at 90. Which was 750km ago...🙄
The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
LordRover
SupporterWell right or wrong there standard service interval on these is change every 10 years so up to now no needto change the oil. Serviced in accordance with LR specs.
I did mine at 80,000km and mine was the same - most is the crude is the stuff from when the diff was made - dags etc - really there needs to be a early diff oil change (particularly for the front diff) to get rid of this fluff. After I changed my oil I did it again in another 12,000km and then another 12,000km - all good no new fluff that reinforced my thought it was poor castings/forging etc and the fluff ended in the diff.
I now change mine every second service - 24,000km and no issues.
If you believe you not have a diff issue then of course you need to deal with it however if the diff/s stull seem ok I would change the oil and see how you go - maybe check after a few thousand km use .
I do agree though not a good situation to be in.
Garry
REMLR 243
2007 Range Rover Sport TDV6
1977 FC 101
1976 Jaguar XJ12C
1973 Haflinger AP700
1971 Jaguar V12 E-Type Series 3 Roadster
1957 Series 1 88"
1957 Series 1 88" Station Wagon
TopicToaster
SubscriberTo think there’s no wear in a diff is fooling yourself. There is a reason there’s a magnet in there - to catch this wear. I am sure that if the filings were collected over the life of regular changes versus long interval, it would be extremely similar, to the same.
I don’t understand why no one accepts that oil technology, like electronics and everything else in our lives has also moved on and that extended intervals are real? I will say that I’m not a fan of the gearbox interval as I think that’s pushing my friendship somewhat, but that said, my box has seen that and is working fine (not my choice exactly).
2010 TDV6 3.0L Discovery 4 HSE
2007 Audi RS4 (B7)
Swaggie
A real shame cos they charge the big $$,and then give the brand a bad reputation
As a side comment,the new BT 50 we have for work has the auto service,diffs,and TC at 10yrs and 250Km
Absolutely ridiculous.
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