TD5 servicing usually comes down to three decisions: which engine oil to use, which filters to fit and how often to change them. Get those right and the TD5 is a tough, long-lived engine. We regularly see well-maintained Defender and Discovery 2 TD5s still working hard at high mileages because they have been serviced properly with quality oil and filters.
The difficult part is choosing the right products. The price difference between oils and filters can be considerable, but the cheapest combination is rarely the best way to look after a TD5. The original handbook guidance also reflects older oil specifications and vehicles that were new at the time, so modern oil quality, engine use, tuning level and sensible service intervals all need to be considered together.
Which oil is best for the Td5?
The best TD5 engine oil depends on the vehicle’s power level and use rather than viscosity alone. A standard engine, a normally remapped road vehicle and a 250–300+ bhp VNT build place very different demands on the oil protecting the engine and turbocharger.
<p>For standard TD5 servicing, a good-quality 5W-30 ACEA A5/B5 oil remains entirely appropriate. Ravenol FO 5W-30 is our preferred choice for normal service use, while Rock Oil Synthesis F 5W-30 remains available as an alternative.</p>
Ravenol VMO 5W-40 is our preferred all-round oil for standard, normally remapped, towing, off-road and hard-working TD5 engines. Its formal VW 505.01 approval gives it a particularly relevant link to the lubrication demands of unit-injector diesel engines.
Highly tuned TD5 engines need a different level of protection. For 250–300+ bhp builds, particularly those running VNT or larger turbochargers, our preferred oil is Ravenol RUP 5W-40 Racing Engine Oil. RUP was developed for motorsport-level heat and load while retaining recognised manufacturer approvals for everyday road use, making it suitable for protecting both the engine and turbocharger in serious road-going or competition TD5 builds.
For a direct comparison by engine use and tuning level, see our TD5 engine oil selector.
The handbook viscosity chart is still useful for showing how Land Rover related oil grade to ambient temperature, but modern oil choice is about more than just viscosity.
Ravenol VMO is our preferred premium Td5 engine oil.
RAVENOL VMO 5w40
With a higher Viscosity Index Ravenol VMO will hold its viscosity much better. We recommend this oil for all Td5 engines, tuned or standard.
| Density @ 20 °C | 0.848 g/cm3 |
| Viscosity @ 100 °C | 13.3 cSt |
| Viscosity Index | 170 |
| HTHS (High Temperature High Shear) Viscosity at 150°C | 4.0 mPa.s |
| Total Base Number (TBN) | 8.7 mg KOH/g |
Which Td5 filters should you choose?
Price has a big influence on servicing choices, whether you are buying oil or filters, but cost should not be the only deciding factor. Good-quality filters matter on a TD5, and saving a small amount on poorly made filters is rarely worthwhile.
For TD5 servicing, we mainly stock MANN-FILTER and MAHLE filters. Both are proven filter manufacturers and brands we are happy to use ourselves. Plenty of cheaper TD5 filters are available, but their construction and filtration quality can vary more than many owners realise.
To see the difference for ourselves, we bought a selection of TD5 oil filters from different suppliers and cut them open for comparison. The variation in materials and construction was immediately apparent, with the MANN-FILTER and MAHLE cartridge oil filters standing out as some of the best made.
Our MANN-FILTER TD5 service kit uses MANN-FILTER throughout rather than combining whichever filter brands happen to be available. It includes the full-flow oil filter, centrifugal rotor oil filter, fuel filter and air filter, together with a new TD5 sump plug and copper sealing washer.
For air filtration, a good-quality paper filter remains the right choice for most vehicles. We also use and recommend ITG air filters, particularly on tuned TD5s, where they provide a well-made, reusable and UK-manufactured alternative.
How often should you service your Td5?
The Land Rover handbook gives engine oil change intervals of 20,000 km / 12,500 miles or 12 months, with some filters listed at different intervals. That guidance was written when these vehicles were new, and we do not consider it the best approach for a 25-year-old TD5 in normal use today. When changing the engine oil, it makes sense to replace the main service filters at the same time rather than extending them for the sake of a relatively small saving.
For most TD5s, we recommend changing the engine oil and filters at around 6,000 miles, or at least once a year where annual mileage is lower. Vehicles used for frequent short journeys, towing, hard work, off-road driving or sustained high-load use may benefit from shorter intervals.
Highly tuned TD5 engines producing 250–300 bhp or more should not automatically follow the same service interval as a standard road engine. Oil temperature, fuel dilution, competition use and the engine builder’s advice should all be considered, particularly on VNT turbo builds operating under sustained boost.
A TD5 service is not especially expensive when carried out at home, which is one reason many owners replace all the filters together rather than leaving one until the next service. Keeping the engine and turbocharger supplied with clean oil through good-quality filters is straightforward preventative maintenance.
Do not judge TD5 oil condition by colour alone. Diesel engine oil can darken quickly as it holds combustion deposits in suspension, even when it is still within its service life. Mileage, time, engine use and a consistent maintenance record are more reliable guides than appearance.
Waste engine oil should be disposed of through the correct local facilities. Most household recycling centres accept limited quantities of used engine oil, but local arrangements should be checked before travelling.
Other fluids
Engine oil and filters are the main focus of most TD5 services, but they are not the only fluids that need attention. Coolant, brake and clutch fluid, power steering or ACE fluid, gearbox oil, transfer box oil and axle oils should all be checked and renewed at appropriate intervals. Age, heat, water contamination and hard use can affect these fluids even where the vehicle covers relatively little annual mileage.
Propshaft greasing is another servicing job that is easily overlooked. Where greaseable universal joints and sliding splines are fitted, use a good-quality grease and make sure each joint receives fresh lubricant. Sliding sections should be greased carefully rather than packed excessively. Neglected lubrication will shorten the life of even a good-quality propshaft.
This Td5 was slightly overdue a service....
A clean Td5 engine...
Our TD5 service kits make it easy to order the filters needed for routine Defender TD5 and Discovery 2 TD5 servicing. The range covers straightforward filter kits through to fixed-brand premium options, including our all-MANN-FILTER kit with MANN-FILTER used for the full-flow oil, centrifugal rotor, fuel and air filters.
Td5 Recommended Fluids Quick Reference
The fluid recommendations below are based on the oils, fluids and greases we currently use and recommend for TD5 servicing. Some differ from the original handbook recommendations because oil specifications and product availability have moved on since the Defender TD5 and Discovery 2 TD5 were new.
The section below is intended as a practical product reference for wider TD5 servicing, not just an engine oil change
Td5 Engine Oil - Defender or Discovery
For normal Td5 servicing, use a good quality 5W-30 or 5W-40 engine oil from a reputable brand. Rock Oil Synthesis F 5W-30 is our standard option; Ravenol VMO 5W-40 is our preferred premium option.
7.2 - 8.2L required.
Rover Differentials (inc. Salisbury)
80w-90 / 75w-90 or just plain EP90 is fine. This should be a GL-5 oil. Mineral is best, and only mineral should be used in locking diffs.
LT230 Transfer Box
80w-90 / 75w-90 or just plain EP90 is fine. This should be a GL-4 oil. Mineral is best.
R380 Gearbox
MTF-94 should be used, although ATF Dexron III was specified in earlier models. We have found MTF-94 to be better for the gearbox, and ATF to be better for the driver (slightly smoother gear changes when cold). There are many oils that claim to meet MTF-94, some are just a 75w80 gear oil, some are even a 10w40 engine oil! Stick to reputable brands. MTF-94 is a 75w80 but with special additives.
ZF 4HP22 Automatic
ATF Dexron III is specified in the manual, however we use a fully synthetic ATF by Ravenol, specifically developed for 4HP and 5HP gearboxes. This offers much better protection.
Around 6L will be needed for a change as you cannot fully drain the fluid. The full capacity is 9.7L
Brake Fluid
DOT 4 brake fluid should be used. Don't skimp on this, you won't need much and cheap brake fluid doesn't last.
DOT 5.1 brake fluid can also be used, however do not confuse this with DOT 5 which is completely different and should not be used.
Avoid Mannol 3002 Brake Fluid DOT 4 (see here why)! It should not even be on sale anywhere. Cheap oils are cheap for a reason. You can check out a prospective oil manufacturer here.
Active Cornering Enhancement (ACE)
A cold climate power steering fluid should be used. If this is not available then ATF can be used, though this is not recommended.
Power Steering
A good quality ATF (Dexron III) should be used. Cold climate power steering fluid can also be used.
Coolant
Coolant containing organic additive technology (OAT) should be used in the Td5. Mix 50/50 - 10-15 litres of mix fills the system. For best results mix with distilled water.
Swivel Housings & CV
Since Land Rover did away with the drain and level plugs on the Defender swivel housings it's not practical to top up. When replacing the swivel housing grease use either Morris K48 or the Land Rover equivalent.
Grease
Parts such as universal joints, greaseable track rod ends etc should be regularly greased. We highly recommend Morris K48 which we use for all greaseable parts, nuts, bolts etc.
