Oil Filter Housing Gasket Potentially common leak on the X350s and only requires taking off 3 bolts to replace, my gasket was completely shrunken - noticeable difference from the new one and was causing a decent leak. You will have to top off as well of course. I managed to only have to add I believe 2-2.5 quarts to get back to level, much better than a full oil change as an Indy had quoted for and just having done one

 

Common leak area, mlmics pan gasket leak which is not as common. Easy.

 

Good to keep in mind for the next scheduled oil change...

 

FriendlyJagXJ8L Please, how did you manage to change this gasket whilst losing so little oil (and insodoing making only a little mess I imagine)?

 

Would you happen to have the part number handy? To save on some interweb sleuthing. Thanks.

 

I think it is this...#2
Verify VIN window.






SKU
NCE1842AA
Genuine OEM NCE1842AA - Jaguar Oil filter housing gasket (NCE1842AA) part for S-type 1999 - 2008 Classic, Xj 2003 - 2009 (from G00442 To H32732) Classic, Xk 2006 - 2014 (from B00379), Xf 2009 - 2015. Authentic Jaguar Part.

 

Thanks @FriendlyJagXJ8L for the post and @h2o2steam for the part number. My 04 XJR has a leak and I replaced the pan gasket. I may have not got it sealed well, but I didn't even know to look for this gasket. Great info and I'll have one on hand for the next oil change just in case.

 

FriendlyJagXJ8L ,
Please see my post #4
I need to decide whether this is something to be done on axle stands in my basement car park (in 50 degrees C) or at my friendly garage who only charge me for a hoist?
How messy, please?

 

That is indeed the correct part--have one sitting here waiting for my next oil change to do on my '06.

 

Thanks for the confirmation @mhamilton. I've enjoyed several of your posts here. Always good info. So many that I knew you weren't that far away in Raleigh. I'm down in Greenville, SC and my XJR came from Raleigh, now that I think about it. The 09 from Cary.

 

I was going to do mine on the last oil service but those 3 bolts were tight! Next time I am going to get the engine up to temperature first and hopefully they will come out. They are not in a good place if one snaps.

 

As you did not get another answer, I would suggest to combine the replacement with an oil change. That way, you do the work only once and it should not be messy as there will be no oil in the car. Furthermore, as you normally also replace the oil filter, I would say that without the filter accessibility will be better.
In any case, I would do the job at your friendly garage, it is much nicer to do it standing up than when lying under the car...

Best regards,

Thomas

 

Thanks Thomas

 

I can confirm this is the way to do it. I did this project last night. Agree with previous posters, the bolts are very tight! FSM says 15 ft lbs, they were definitely stuck more than that. There is really no additional mess once you remove the oil filter, all the oil in the galleries comes out with that. The messiest part on mine was cleaning up the block and front of the timing cover, and the filter adapter itself. Put some paper towels/rags in the 2 bores in the block to prevent dirt getting into the engine. And clean up the bolts/bolt holes so they go back in easily. The bolts will not come out alone (they are too long). Take the entire unit out as an assembly.

 

Thank you Michael,
My WSM gives 25 Nm for the bolts. It also instructs removal of the Engine Mount (@ 155 Nm per bolt)!?
Obviously a sheared Housing bolt in this position would be disastrous; did the bolts loosen cold, or did you need a warm engine, please?
Michael, any idea if this seal failing could allow coolant and oil to mix in the Oil filter Housing?
Regards,
Ray

 

Yes--25 Nm = 15 ft.lbs. Or thereabouts.

I did have a hot engine because I was changing the oil. I don't think hot/cold would have made too much of a difference.

This seal has nothing to do with coolant, just oil in/out of the filter housing. However--if your car has the oil-to-water cooler on the filter adapter, that would be the source of coolant mixing. My car is not equipped with the oil cooler.

 

Thanks again Michael,
I am not at all sure that I have coolant/oil mixing. I have a small oil leak which appears to be the seal in question and a small coolant leak. I top up the coolant every couple of weeks, but I have never had to top up my oil since it was changed 7000 km ago? So naturally, as a paranoid Jaguar owner, I have instantly decided that the two must be linked!
My oil is a little brown (I believe this is quite normal) but the next change is not for a further 3000 km. There is no real evidence for oil/coolant mixing, but why no oil loss in 7000 km in an engine with 185,000 km (115,000 miles) on the clock?
You have been around us Jaguar owners for long enough to know how we always fear the worst! I am going to brave the 40 plus degrees C in my basement car park this coming weekend to get her up on stands and take a closer look.

Regards,
Ray

 

I am going to clamp the two hoses feeding coolant to and from my Oil Filter Adaptor. Michael, you did your housing gasket after draining your oil for changing. My only concern is that (since my next oil change is not due for another 3,000 km) if I undo that housing without draining, oil will gush out of the sump? Sorry to be a pest, but forewarned is forearmed?

 

No, the amount of oil that comes out when removing the adapter is the same that will come out removing the filter. Both are above the sump level. You may want to just move your oil change up the 3,000km (1800mi), leaving the filter on the housing is going to make it much more difficult to handle and harder to clean the adapter itself.

I'll PM you about some coolant stuff to check, so I don't derail this thread.

 

I do think at second thought my number may be a little off hope that I didn’t mislead anybody or went just based off my word - I didn’t accurately measure how much was lost as I used a large drain container with some oil in it already from a separate oil change, but I do know I added significantly less than a gallon which on our cars I know an oil change would require a bit above 6 quarts. Believe it’s either 6.4 or 6.9, have seen both those numbers around. In terms of what was lost I believe it should have been in the ball park of 2 to 4 quarts at max. Perhaps I was a bit lucky as well and you could lose more, so I encourage people to double check how much you lose in the process to be safe and yes haha there was just a little mess