Thread: TD5 BIG-END BEARING FAILURE

Originally Posted by djam1

Joel having spoken to people who work extensively on these engines ANY Td5 can have this issue.
Don't delay to do it you would kick yourself if it failed as a result of you not doing it.

Yeah, I drive it scared at the moment. I just need the time to do it. I have the Madmad gauge with audible alarm connected to the oil pressure sensor as a precaution in the mean time.

Happy Days

I had my D2a setup so that if it lost oil pressure after having had oil pressure (ie allowing for start-up) then the EGR throttle valve would close fully and choke the engine.

Originally Posted by joel0407

Where do we find the list of effected engines. Mines 10P. I have the bolt (genuine LR with thread lock) but haven't had time to fit it yet. I don't know if it's been changed previously as I bought the vehicle with 165k. Happy Days

As Djam1 said, just do it. I was only going to move the d2 800m down the road to a different house to do the pump bolt and a service.
It wasn't to be my day and I joined an unpopular club of owners who knew the potential but figured I couldn't be that unlucky given it had travelled more than 280.000 with out issue.

There isn't a list, merely conjecture/opinion across forums as to which series of engine should be immune following numerous claims to LR warranty and many more outside.

BTW, using a 10w-40 instead of a 5w-40 is a non issue in Australia and particularly above 0°C as they are ordinarily the same viscosity at that temp.
Infact there's one 15w-40 I can name that's thinner at 0° than some 5w-40's......

Originally Posted by rick130

BTW, using a 10w-40 instead of a 5w-40 is a non issue in Australia and particularly above 0°C as they are ordinarily the same viscosity at that temp.
Infact there's one 15w-40 I can name that's thinner at 0° than some 5w-40's......

Do tell! My nissan work car has problems with oil pressure in the cold. Currently running valvoline 5w30 and it's not quite enough. You can hear the timing chain ticking until the oil warms up and thins out.

Depends a lot on base oils used.

I think it goes something like this.
Use a mix of light weight mineral and PAO or Group III base oils with a heavy dose of viscosity index improvers (VII's) and you'll get good pumpability @ -25° but it tends to thicken appreciably as you approach 0° and maintains the correct viscosity through 40° to 100° but will probably tend to shear a bit in use, and definitely shear in extreme use, eg. racing.

Use heavier weight POE's and PAO's with no VII's and the naturally high VI of the base oils gives good pumpabability down to around 0°, but starts to thicken a bit below that.

Eg. About six to seven years ago, Redline's 15w-40 was thinner at 0° than a couple of well regarded wider viscosity span oils.
I think I posted the comparative list on here at the time in someone else's thread.

Andrew,


Re TD5 engines affected by oil bolt problems - mine is 2004 and I checked it at 170K. I undid the bolt with a short stubby 3/8 ratchet and 1 finger. No thread locker at all.


Conventional wisdom is only earlier engines were affected. I beg to disagree.


Rgds

Originally Posted by alanw

Conventional wisdom is only earlier engines were affected. I beg to disagree.
Rgds

If you read this,
and own a TD5,
and DONT KNOW the condition of that bolt.
You need to stop driving it,,
and check.



gawd, how long have we all been saying this??? ten years?