306DT Oil Capacity, Grade & Service Data

The 306DT takes approximately 6.5 litres with filter change [PATTERN DATA], to Jaguar low‑SAPS specification, typically 5W‑30.

Manufacturer service interval: 16,000 miles or 12 months, whichever comes first, on qualifying oil [PATTERN DATA]
Real‑world caveat: the 306DT is sensitive to DPF regeneration‑related oil dilution, especially in urban driving [EM-INTERVIEW] - see below
Applies across XF (X250/X260), XJ (X351), F‑Pace (X761) and the shared Land Rover applications, with minor capacity variance by sump design - see the variant table
Last verified: August 2026

Full specification table, variant differences, common mistakes, and the DPF‑related caveat explained below.

The Specification Table

Spec	Value
Capacity with filter change	~6.5 litres [PATTERN DATA]
Capacity without filter change	~6.2 litres [PATTERN DATA]
Viscosity grade	5W‑30 (low SAPS)
Jaguar specification	STJLR.03.5006 [PATTERN DATA]
Change interval	16,000 miles / 12 months [PATTERN DATA]
Oil filter type	Cartridge, top‑mounted
Coolant capacity	~12.5 litres (with heater matrix) [PATTERN DATA]
Oil filter part number	JLR LR045205 (typical) [PATTERN DATA]

Figures marked [PATTERN DATA] are derived from workshop manuals and specialist consensus; [EM-INTERVIEW] reflects real‑world mechanic feedback.

Variant Differences

The 306DT is fitted across several Jaguar models. While the core specification is consistent, sump capacity and filter access vary slightly by application. The engine is also shared with Land Rover (e.g., Discovery 4, Range Rover Sport), but Jaguar‑specific fitment is listed below.

Application	Capacity Note	Filter Access
XF (X250) 2.7D / 3.0D	Standard 6.5L figure applies	Top‑mounted, accessible from above
XF (X260) 3.0D	Standard figure, some early builds noted slightly higher sump capacity	Top‑mounted
XJ (X351) 3.0D	Standard figure applies across both generations	Top‑mounted, tighter access on early models
F‑Pace (X761) D300	Standard figure applies	Top‑mounted

For the 276DT (2.7‑litre version), the capacity and grade are similar but not identical; always confirm via your VIN - see our engine code decoder for help. The 306DT is also used in Land Rover vehicles; those applications may have different oil specifications due to different sump designs and service schedules – check your specific vehicle handbook.

Year, Market & Facelift Variations

The 306DT (AJD‑V6) was introduced in 2004 in the XF (X250) and later spread across the range. Early UK‑spec cars (2004–2012) are more prone to DPF‑related issues and oil dilution because the engine management software was less aggressive in managing regeneration cycles. In 2013, Jaguar updated the ECU software to improve regeneration strategy, which also affected oil change recommendations. From 2016, a revised oil specification (STJLR.03.5006) was introduced, which is backward‑compatible but requires the correct low‑SAPS approval.

For UK market cars, the VIN’s 10th character indicates the model year - see our engine code guide for decoding. If your car was built before 2013 and you experience frequent DPF regenerations, it is worth checking with a Jaguar specialist whether the software update has been applied.

Real‑World Caveats

The manufacturer's 16,000‑mile interval assumes motorway‑weighted use. In real UK conditions, short urban journeys prevent the DPF from regenerating fully, which can lead to unburned fuel diluting the oil - a well‑documented characteristic of this engine family [EM-INTERVIEW]. Independent specialists we've spoken to frequently recommend a shorter, 8,000‑mile interval for owners whose driving is predominantly short urban trips, regardless of what the service computer indicates.

This is not manufacturer guidance - it is a practical adjustment specialists make based on what they see coming through the workshop. The cost of an extra oil change is a fraction of the alternative, which is oil dilution serious enough to require attention. For a full explanation of the mechanism, see our 306DT crankshaft bearing failure page (oil quality is directly linked to bearing longevity).

Additionally, using the correct low‑SAPS oil is critical - see the Common Mistakes section below for why.

Common Mistakes

Trusting the service computer interval blindly. It doesn't know your driving pattern is mostly short urban trips - many specialists advise halving the interval for urban‑only use.
Using a non‑low‑SAPS oil. This can damage the DPF and after‑treatment system over time - see our DPF & Emissions Systems Explained for why this matters.
Confusing 306DT with 276DT. The 2.7‑litre V6 has a slightly different capacity and grade - check your engine code first via our Engine Code Guide.
Assuming all V6 diesels share identical figures. The newer Ingenium 3.0‑litre (AJ20D6) has different capacity and specification entirely - see our AJ20D6 Oil Capacity if you're not certain which family you have.
Using 0W‑30 instead of 5W‑30. While 0W‑30 may be acceptable in some climates, Jaguar specifies 5W‑30 for this engine; using a thinner oil can affect hydraulic tensioner operation and increase wear.

How to Verify on the Actual Vehicle

The dipstick and filler cap on the 306DT are both clearly marked and accessible from above without removing any panels. To confirm your exact build spec:

Check the engine number stamped on the cylinder block - the location is described on our Engine Number Location guide.
Use the VIN to decode the exact engine variant and year - our VIN decoder can help.
Consult the service book or the vehicle’s infotainment system for the service history; the oil change interval may have been modified by previous owners.
If in doubt, a Jaguar specialist can use the manufacturer’s diagnostic tool to read the exact oil specification stored in the ECU.

Early and late production runs occasionally carry minor running changes that aren't always reflected in aftermarket reference sources - the VIN is your best guide.