I am referring to the oil filter housing.
What is the procedure to change the seal please?
Drain all engine oil first?
Thanks

 

I found this using AI:

Oil Filter Housing Seal Replacement Checklist: 2003 X350

Prep & Safety

• [ ] Park on level ground, let engine cool
• [ ] Jack up front end, secure with jack stands
• [ ] Disconnect battery (optional but recommended)

Drain & Access

• [ ] Remove splash shield (8mm or 10mm socket)
• [ ] Drain engine oil (13mm drain plug)
• [ ] Remove oil filter cap (76mm 14-flute socket)
• [ ] Remove oil filter and allow housing to drain

Housing Removal

• [ ] Disconnect any sensors or hoses from housing
• [ ] Remove housing bolts (Torx or 10mm socket depending on engine)
• [ ] Carefully remove housing and old gasket

Seal Replacement

• [ ] Clean mating surfaces thoroughly
• [ ] Install new gasket/seal (lightly oil if rubber)
• [ ] Reinstall housing and torque bolts to spec

Reassembly

• [ ] Install new oil filter and lubricate seal
• [ ] Torque filter cap to spec
• [ ] Reinstall drain plug with new crush washer
• [ ] Refill engine oil (see capacity below)
• [ ] Reinstall splash shield
• [ ] Start engine, check for leaks
• [ ] Verify oil level after short run

🔩 Torque Specs & Oil Capacity



Component

Torque Spec

Notes

Oil filter cap

25 Nm (18 lb-ft)

Use proper socket to avoid cracking

Oil filter housing bolts

25–28 Nm (18–21 lb-ft)

Confirm bolt type (Torx vs hex)

Drain plug

30 Nm (22 lb-ft)

Replace crush washer



Engine Variant

Oil Capacity (with filter)

Oil Type Recommendation

4.2L V8

~7.5 quarts (7.1 liters)

SAE 5W-30 (Jaguar spec)

3.0L V6

~6.6 quarts (6.2 liters)

SAE 5W-30 (Jaguar spec)

Hope it is of value for your project.

rsa
--

 

No need to drain all the oil, as the filter housing is above the oil pan, but you will have some oil draining from the filter and the filter housing.

The replacement is pretty much straightforward and basically as described in the previous post. If needed, I can share the relevant part of the workshop manual.

Best regards,

Thomas

 

Brilliant detailed replies !
Thank you for both.
Bob