Another sump gasket already

[CraigE]

Well a bit over the useless sump gaskets on a td5.
This one last about 2400kms before it started leaking again.
Was meticulous fitting it using Loctite gasket gel, that I have used on every other car with no issues.
Replaced about 3 and a bit weeks ago, genuine gasket.
First 2350kms or so was fine no leaks or even a sign of a leak, but most of these kms wer flat kms on freeway Home to Kwinana.
Then yesterday up at Huntly so up through the hills came out to find a little pool of oil under it again. Not as bad as last time but still there. Car working a bit harder with some 3rd gear hills.
4th sump gasket in 8 years but kms are the main issue.
First one done by dealer lasted I reckon 10,000kms before it started leaking rear and front.
Second one by me lasted about 20,000kms before it started leaking.
Third one maybe 10,000kms put up with the leak as not bad only drops for about another 30,000kms though, but got to a point a few weeks ago was time to replace as leaving big pools.
Fourth on 2400kms.
The rear on these is nothing short of pathetic. Yes gasket is located correctly, with locating tabs in properly. Not a drop of oil from the rest of the sump.
Or do I have other issues? Is it possible there is sump pressure etc blowing out the rear of the seal?
Will wait until next oil change to change out again.
May go down the path of using Three bond gasket goo as have never had an issue using this but is expensive. Used on bikes, V8s etc, but having said that I have never had an issue with the loctite either before.
Making the alloy V8s look good at present, no leaks on that one at all.
[bawl]

[rangieman]

Id start thinking down the line of maybe your sump is warped.
Maybe from a previous job with the wrong torque sequence [wink11]
Have you tried nipping the bolts up in sequence of course when it has started to leak,

[CraigE]

Will try nipping them up again, but not usually successful once oil gets between gaskets in my experience. Sump is not warped and deck was clean and flat. Seems to be a common issue with the td5 sump leaking at the rear. What irks me is it did not leak a drop for 2400kms. Seems to be the back drivers side corner that lets go on these all the time.

Id start thinking down the line of maybe your sump is warped.
Maybe from a previous job with the wrong torque sequence [wink11]
Have you tried nipping the bolts up in sequence of course when it has started to leak,

[rangieman]

Will try nipping them up again, but not usually successful once oil gets between gaskets in my experience. Sump is not warped and deck was clean and flat. Seems to be a common issue with the td5 sump leaking at the rear. What irks me is it did not leak a drop for 2400kms. Seems to be the back drivers side corner that lets go on these all the time.
Funny how you say a common issue as i in my opinion i think who fitted the gasket the issue not blaming you[wink11]
I have done a few Td5 sump gaskets and when taken the time and done right have never had one leak .
Thats why i say the sump could be the issue not blaming you [bigsmile1]

[bee utey]

One of the most useful tricks I developed with sump gaskets is to only finger tight the bolts at assembly, then after 24 hours when the sealant has hardened do the bolts up to spec. Fast assembly and immediate use does tend to lead to a rapid return of leaks. Unfortunately the vehicle is off the road for an extra day but that's the price you pay. Oh and I now use Ultra Grey silicone, good stuff.

[CraigE]

That surprises me nearly everyone I have seen both Defender and Disco has a slight leak if not a bad one. I find it very rare not to see a TD5 without oil spots under neath it. [bigwhistle][bigwhistle]
I mean fitting a gasket is not rocket science and have never had any issue with any other car or gasket. The gasket slotted in fine. Checked and triple checked was seated fine. [thumbsupbig] Next time out will give the sump a better inspection to check if square. Could not see any damage visually.
I know issue were also raised over the washer at the back d/s being slightly thicker, but not sure looking at it, but exactly where the last 2 leaks have been. Also if not a known issue why do LR recommend sealant on this section only? To me that shows an inherent fault. I sort of agree they dont leak initially, but seem to eventually.
May try the 24hr trick next time. What I initially intended doing but it started to **** down and was looking heavy, plus got a call to work next morning.:bangin:
At the moment it is just a drip but annoys me just the same.:bat:

Funny how you say a common issue as i in my opinion i think who fitted the gasket the issue not blaming you[wink11]
I have done a few Td5 sump gaskets and when taken the time and done right have never had one leak .
Thats why i say the sump could be the issue not blaming you [bigsmile1]

[jx2mad]

When I had my 300 TDI done years ago the service manager had the sump glued on and it had to stand overnight before driving to ensure proper bonding. No problem

[CraigE]

Never had any issues with tdi or v8s. next time I think I will let stand for 24 hrs before tightening and filling with oil.
Cheers
Craig

When I had my 300 TDI done years ago the service manager had the sump glued on and it had to stand overnight before driving to ensure proper bonding. No problem

[CraigE]

Had a good look at this again yesterday.
Definitely leaking from Rear RH (Drivers side) so may be something in what others have posted re thicker washer and a common place to leak.
However what I did find that did alarm me a little was 2 of the bolts positions 2/3 I think were not at tension, have re torqued and will see how they go. Thread seems to be OK on bolt and housing.
Will run a thread tool when I have off next.
Will also use high strength loctite on the bolts instead of medium.
Maybe time to look for a new set of bolts as well as they seem to have a couple that the standard 10mm does not fit anymore tightly.
Cheers
Craig

[DazzaTD5]

While no real answer here.... but

The TD5 sump gasket is ....fiddly to do and requires care and a degree of finesse to fit.
Again, not having a crack at anyone but most failures shortly after fitting can be blamed on.... fitting.

There are plenty of repairs on Land Rovers that would seem simply enough..... and are.... if you have been working on them along enough [wink11]

Regards
Daz

[peter_yqm]

Craig,

I went through the same issues, always leaking from a rear corner. In my opinion it was caused by poor gasket manufacture, both genuine and non-genuine exhibited the issue.

I wrote a summary here:
Td5 Sump gasket ..... why they can leak (https://www.aulro.com/afvb/projects-and-tutorials/194102-td5-sump-gasket-why-they-can-leak.html)

Provided the correct installation procedure and correct location of sealant (in my case Permatex Ultra Black) is applied the sump stays tight. The use of a few pieces of sewing cotton tied through the attachment holes to keep the gasket in position during installation keeps everything in place during assembly.

I have seen gaskets recently that were better manufactured and I'm advised by staff at Graeme Cooper's that they fit and seal correctly out of the packet.

.......peter

[Pedro_The_Swift]

Worth a shot Craig?

[Pedro_The_Swift]

Peter-- I have added yours to the TD5 sticky in TGO,, :BigThumb:
my apologies it wasnt there sooner,,
its only been what? 3 years? :)