Land Rover2020–2026Technical specifications

Defender 3.0 D300 MHEV: Technical specifications

Workshop data for the 3-litre diesel (engine code DT306). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Summary

Match the engine code (DT306) and chassis (L663) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Land Rover
Model
Defender
Chassis
L663
Years
2020–2026
Fuel
Diesel
Engine code
DT306

Performance & efficiency

Power
221 kW (300 hp)
Engine size
2,997 cc
Cylinders
6 · DOHC
Compression ratio
15.5:1
Fuel system
Bosch

Fluids & capacities

Engine oil (with the filter)
8.8 litres
All 82 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type6/DOHC
Capacity cc2997
Compression ratio :115,5
Fuel system MakeBosch

Injection system

Air metering TypeMass/MAP
Pump typeCommon rail
Fuel main pump delivery pressure bar2500 Max

Valve clearances

Valve clearances on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mmHydraulic
Valve clearance - EXHAUST mmHydraulic

Engine oil & fluids

Engine oil

The Land Rover Defender 3.0 D300 MHEV (2020–2026) takes 8.8 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-30 for all ambient temperatures, with oil specification STJLR.03.5007 and API/ACEA classification /C2.

Transfer box

The transfer box has a listed capacity of 1.5 litres. The specified oil is Shell TF 0753.

Coolant

The listed coolant type is Havoline XLC. The recorded coolant colour is Orange. The listed total cooling-system capacity is 14.5 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range All temperatures
Engine oil grade SAE 0W-30
Engine oil classification OEM STJLR.03.5007
Engine oil classification API/ACEA /C2
Engine with filter(s) litres 8.8
Other lubricants and capacities
Automatic transmission fluid Type Shell L12108 (ZF Lifeguard 8)
Automatic transmission (drain & refill) litres —
View more information —
Filling and checking level
Automatic transmission (dry fill) litres 8.5
Automatic transmission - dry-fill capacity
Differential oil grade - front SAE Castrol BOT750B
Differential front/AT litres 0.50-0.52
Front differential
Differential oil grade - rear SAE Castrol BOT750B
Differential rear litres 0.84-0.86
Rear differential
Transfer box oil grade SAE Shell TF 0753
Transfer box litres 1.5
Coolant Type Havoline XLC
Coolant Colour Orange
Cooling system - total capacity litres 14.5
Cooling system
Brake fluid Type DOT 4
Brake fluid classification ISO Class 6
Brake fluid litres 0.9
Selective catalytic reduction (SCR) additive Type AdBlue (AUS 32)

Brakes & wear limits

Brake disc thickness

Brake discs on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are replaced at a minimum thickness of 32 mm (ventilated) front and 23 mm (ventilated) rear.

Minimum disc thickness for replacement - ventilated Front32 mm
Minimum disc thickness for replacement - front
Minimum disc thickness for replacement - ventilated Rear23 mm

Brake disc and drum dimensions

Minimum disc thickness for replacement - front
Minimum pad thickness Front—
Minimum brake pad thickness - front
Minimum pad thickness Rear3 mm

Service & electrical

Service checks and adjustments

Radiator cap bar1,40
Thermostat opens °C90

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are tightened in 3 stages: 50 Nm, then 90°, then a final 190°.

Cylinder head
Renew boltsYes
Tighten50 Nm
Tighten90°
Tighten190°
TightenM6=12 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsYes
Main bearings Stage 1—
Big end bearings Renew bolts/nutsYes
Big end bearings Stage 120 Nm
Big end bearings Stage 2125°
Oil pump to cylinder block25 Nm
Sump bolts—
View more information—
Lower oil pan
Sump drain bolt23 Nm
Flywheel/driveplate-/30 Nm+120°
Crankshaft pulley/damper bolts37 Nm+90°
Camshaft sprocket/gear80 Nm+90°
Camshaft carrier/cap12 Nm
Camshaft/rocker cover1)10 Nm 2)30 Nm
Inlet manifold to cylinder head12 Nm
Exhaust manifold to cylinder head1)10 Nm 2)18 Nm
Water pump25 Nm
Injector/clamp11 Nm+236°
Injector pipe unions11 Nm+62°
Glow plugs18 Nm
Glow plugs
Crankshaft position (CKP) sensor/engine speed (RPM) sensor8 Nm
Camshaft position (CMP) sensor8 Nm
Nitrogen oxide (NOx) sensor60 Nm
Engine oil pressure switch15 Nm
Oil filter25 Nm
Chassis tightening torques
Front hub120 Nm+60°
Front hub - wheel bearing housing bolts—
Front hub - wheel bearing housing bolts
Rear hub120 Nm+60°
Steering wheel48 Nm
Steering rack/box mounting110 Nm+180°
Steering track rod end140 Nm
Brake disc to hub Front10 Nm
Brake caliper to carrier Front35 Nm
Brake caliper/carrier to hub Front133 Nm+60°
Brake disc to hub Rear10 Nm
Brake disc to hub - rear
Brake caliper to carrier Rear35 Nm
Brake caliper/carrier to hub Rear110 Nm+120°
ABS sensor Front9 Nm
ABS sensor Rear9 Nm
Road wheels—

Air conditioning

No. of AC service connectors2
Air conditioning restrictor typeExpansion valve
Compressor clutch/magnetic couplingYes
Compressor variable displacement solenoidYes
Air conditioning refrigerant Type—
Do not mix R134a with R1234yf.
Air conditioning refrigerant quantity grams650±10
Air conditioning refrigerant quantity
Air conditioning oil groupPAG
Air conditioning oil TypeSPA2
Air conditioning oil quantity cm³80

Frequently asked questions

How much oil does the Land Rover Defender 3.0 D300 MHEV take?

The Land Rover Defender 3.0 D300 MHEV (2020–2026) takes 8.8 litres of engine oil with the filter. The specified engine oil grade is SAE 0W-30 for all ambient temperatures, with oil specification STJLR.03.5007 and API/ACEA classification /C2.

What are the valve clearances for the Land Rover Defender 3.0 D300 MHEV?

Valve clearances on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Land Rover Defender 3.0 D300 MHEV?

The cylinder head bolts on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are tightened in 3 stages: 50 Nm, then 90°, then a final 190°.

What is the minimum brake disc thickness for the Land Rover Defender 3.0 D300 MHEV?

Brake discs on the Land Rover Defender 3.0 D300 MHEV (2020–2026) are replaced at a minimum thickness of 32 mm (ventilated) front and 23 mm (ventilated) rear.

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