What is the recommended service schedule for the Range Rover 5.0 Supercharged V8?
The Range Rover 5.0 Supercharged engine is one of the most powerful and sophisticated petrol units ever fitted to a luxury SUV. However, its performance and longevity depend entirely on following the correct service schedule throughout its working life. Neglecting oil changes, supercharger belt inspections, or cooling system maintenance on this engine leads to accelerated internal wear and significantly higher engine replacement costs in UK workshops down the line. At Range Rover Engine Specialist in Grays, Essex, we work with AJ133 5.0 supercharged engines daily. Therefore, we understand exactly what this unit needs at every service interval to stay in peak condition for many years of reliable performance.
Why the Service Schedule Matters So Much for This Engine
The Range Rover 5.0 Supercharged engine operates under considerably more mechanical and thermal stress than a standard naturally aspirated unit. The Roots-type supercharger generates additional heat in the intake system, placing greater demands on the engine oil, cooling circuit, and ancillary components at every stage of operation. Furthermore, the dry-sump lubrication system fitted to SVR variants circulates oil differently from a conventional wet-sump engine, meaning oil quality degradation has a faster and more damaging effect on bearing surfaces. Therefore, sticking strictly to the recommended service schedule is not optional; it is essential. Moreover, a well-documented full service history significantly protects the long-term value and reliability of any Range Rover fitted with this engine.
AJ133 5.0 Supercharged Engine Codes: Full Reference Table
Before sourcing any Range Rover engines for sale or arranging service or engine replacement work, confirming your exact engine code and output variant is critical. Key AJ133 engine codes and variants are listed in the tables below.
AJ133 Range Rover 5.0 Supercharged Engine Code Table
Engine CodeOutputVariantSuperchargerModelsAJ133 (503PS)503 PS / 625 NmStandard SuperchargedRoots-typeRange Rover L405, Sport L494AJ133 (510PS)510 PS / 625 NmAutobiography DynamicRoots-typeRange Rover L405AJ133 (550PS)550 PS / 680 NmSVR (early)Roots-typeRange Rover Sport SVRAJ133 (575PS)575 PS / 700 NmSVR / Defender V8Roots-typeRange Rover Sport SVR, Defender L663AJ133 (565PS)565 PS / 700 NmSV AutobiographyRoots-typeRange Rover L405AJ133 (525PS)525 PS / 625 NmDefender V8Roots-typeDefender L663 V8 / Carpathian
Range Rover 5.0 Supercharged Models and Service Intervals
ModelEngineStandard ServiceOil Change IntervalSupercharger BeltRange Rover L405 SCAJ133 503PS1 year / 16,000 miles1 year / 10,000 miles (hard use)Every 4 years / 60,000 milesRange Rover Sport SVRAJ133 575PS1 year / 16,000 miles6,000–8,000 miles (track/hard)Every 4 years / 60,000 milesDefender L663 V8AJ133 525PS1 year / 16,000 miles1 year / 10,000 milesEvery 4 years / 60,000 milesRange Rover Sport L494 SCAJ133 503PS1 year / 16,000 miles1 year / 10,000 milesEvery 4 years / 60,000 miles
Always confirm your exact service requirements via your owner's handbook or contact our team directly.
Oil Service Intervals for the Range Rover 5.0 Supercharged Engine
Oil is the lifeblood of the Range Rover 5.0 Supercharged engine. Therefore, using the correct specification oil at the correct interval is the single most important maintenance task for any AJ133 owner. Land Rover recommends an oil change at every annual service or 16,000 miles, whichever comes first, under normal driving conditions. However, for vehicles used for towing, off-road driving, or regular track use, an oil change every 6,000 to 10,000 miles is strongly recommended. Furthermore, only fully synthetic 5W-30 oil meeting the Land Rover specification STJLR.03.5004 should be used. Using incorrect oil or extending intervals beyond the recommended schedule is one of the most common causes of premature bearing wear and turbocharger damage in this engine family.
Supercharger and Ancillary Component Service Requirements
Beyond regular oil changes, the Range Rover 5.0 Supercharged engine has several additional service requirements that many owners overlook. First, the supercharger drive belt should be inspected at every major service and replaced every four years or 60,000 miles regardless of apparent condition. Next, the supercharger charge cooler system, which reduces intake air temperature, should be inspected and the coolant circuit flushed every three years. Furthermore, the spark plugs on the AJ133 should be replaced every 32,000 miles to maintain clean combustion and prevent misfires at high loads. Additionally, the engine coolant should be changed every five years to prevent corrosion within the alloy engine block. At Range Rover Engine Specialist, we carry out all these checks as part of our comprehensive engine rebuild and servicing process.
Common Faults From Missed Service Intervals on the 5.0 Supercharged Engine
Missed or delayed service intervals on the Range Rover 5.0 Supercharged engine lead to a well-documented set of serious mechanical faults. First, neglected oil changes cause oil sludge build-up in the oil galleries, restricting flow to the main bearings and leading to catastrophic bearing failure at high revs. Next, a worn or broken supercharger belt causes immediate supercharger failure and potential secondary engine damage. Furthermore, degraded coolant in the charge cooler system reduces intercooling efficiency, causing the engine management system to pull power and leading to overheating under sustained hard driving. Additionally, worn spark plugs cause misfires that place additional stress on the catalytic converters. When these faults combine, engine replacement costs in UK workshops escalate rapidly and unavoidably.
Reconditioned Engines vs Used Engines: Choosing the Right Replacement
When your Range Rover 5.0 Supercharged engine reaches a point where replacement is necessary due to service neglect or mechanical failure, choosing between reconditioned engines vs. used engines is critical. A used AJ133 V8 sourced from a salvage vehicle carries no guarantee of service history compliance, supercharger condition, oil consumption levels, or internal wear, making it a high-risk option for such a complex and expensive unit. A reconditioned Range Rover 5.0 Supercharged engine, however, has been fully stripped, cleaned, inspected, and rebuilt using new or refurbished components. It is then pressure-tested before leaving the workshop. At Range Rover Engine Specialist, we exclusively supply reconditioned jlr engines backed by a genuine warranty. Therefore, every engine we fit delivers the performance and reliability your Range Rover deserves.
Supply and Fit Services for the Range Rover 5.0 Supercharged Engine
At Range Rover Engine Specialist in Grays, Essex, we provide complete supply and fit services for the AJ133 Range Rover 5.0 Supercharged engine across all model variants and output levels. Our experienced technicians manage every stage of the process, from initial diagnostics confirming the cause of engine failure, through careful removal of the failed unit, to professional installation of your reconditioned Range Rover engine and comprehensive post-fit testing. During the engine rebuild and fitting process, we inspect the supercharger unit, oil delivery system, charge cooler circuit, timing components, and spark plug condition. Furthermore, every supply and fit package includes a full road test before your vehicle is return. Every job carries a full written warranty on both parts and labor.
No Upfront Charges, No Deposit Required UK-Wide Logistics
We know that a Range Rover 5.0 Supercharged engine failure or major service requirement brings real financial pressure. That is why Range Rover Engine Specialist operates with no upfront charges and no deposit required for every engine replacement and supply and fit package we carry out. You will not be ask to pay anything before work begins. Furthermore, no hidden charges are add once the work is underway. The price we quote is the price you pay. Whether you are in London, Manchester, Birmingham, Edinburgh, or anywhere across the UK, we provide fully tracked, nationwide delivery for every reconditioned engine we supply. For international customers, we offer RoRo, container freight, air freight, and full customs clearance support. Buy and shop with total confidence backed by real expertise, a genuine warranty, and complete transparency every single time.
Frequently Asked Questions
What is the recommended oil change interval for the Range Rover 5.0 Supercharged engine?
Under normal driving conditions, an oil change is recommend every year or 16,000 miles. For hard use, towing, or track driving, an oil change every 6,000 to 10,000 miles is strongly recommend to protect internal components.
How often should the supercharger belt be replaced on the AJ133 V8?
The supercharger drive belt should be inspect at every major service and replaced every four years or 60,000 miles, whichever comes first, regardless of apparent condition.
Does Range Rover Engine Specialist require a deposit before starting work?
No, we operate with no upfront charges and no deposit required. You only pay the agreed price once all work is fully and satisfactorily complete.
Can a Range Rover engine specialist deliver a reconditioned 5.0 Supercharged engine anywhere in the UK?
Yes, we provide fully tracked, nationwide delivery with complete transit insurance, plus international shipping via RoRo, air freight, and container transport worldwide.
How do I confirm the correct AJ133 engine variant for my Range Rover?
Check your VIN or vehicle logbook, or contact our team directly. We verify your exact engine code and output variant before sourcing or dispatching any reconditioned replacement unit.