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The Diablo carried Lamborghini's V12 flagship through the 1990s, from the first 5.7-liter coupes of 1990 to the 6.0 of 2001, with the VT, SE30, Roadster, SV and GT along the way. This guide joins our model-by-model series alongside the Gallardo, Murciélago, Aventador, Huracán, Sián and Urus guides.
Our first version of this guide had to leave every interval unconfirmed. We have since worked through the factory workshop manuals for five Diablo versions: the 1991–1993 2WD, the 1994–1995 four-wheel-drive VT, the 1997–1999 2WD, the GT and the 6.0 (whose manual prints a separate USA schedule). The good news for owners is how consistent they are. Every one of them is built on a 2,500 km (1,500 mile) first service, then a service every 12,000 km, or 7,500 miles, and at least once a year. The intervals below come from those schedules. Where a version differs, we say so, and the Roadster, SE30 and 1996–1999 four-wheel-drive cars, which we have not seen a separate manual for, are noted as unverified.
A short disclaimer before the table: the intervals come from the factory workshop manuals named above, and the parts and version fitment come from the Lamborghini parts catalogs we carry for US-market Diablos, checked against each product page. Diablos built for other markets may differ, so confirm by VIN. The warranty and maintenance booklet supplied with your car is still the final word, and we stock original copies in our warranty and maintenance manuals and owner's manuals categories.
Version names follow the Lamborghini parts catalogs for US-market cars: 2WD (1991–1993), SE and VT (1994), VT Supplement (1995), Roadster (1996–1999), 2WD-4WD (1998–1999), SV (1998–1999), GT (1999) and 6.0 (2000–2001).
| Service item | Interval (factory workshop manual) | Variant notes | What's needed |
|---|---|---|---|
| Service schedule | First service at 2,500 km / 1,500 miles, then every 12,000 km / 7,500 miles, at least once a year. Items marked as recommended for dusty roads or heavy traffic are optional; skipping them does not void the warranty | Same cadence on the 1991–1993 2WD, 1994–1995 VT, 1997–1999 2WD, GT and 6.0. Roadster, SE30 and 1996–1999 4WD: unverified, though no manual we read departs from it | Early cars: warranty and maintenance manual 901325705 or the 1991–1995 US Exclusive Motors warranty manual C1L00900. 1999 US warranty manual 901325742, GT warranty booklet and maintenance schedule 901325765, 6.0 warranty manual 0048008170 |
| Engine oil and oil filter | Replace at 2,500 km and every 12,000 km / 7,500 miles, at least once a year. Check the level every 500 km | Capacity 14 liters on the 1991–1995 cars (Agip Sint 2000 10W-40), 15 liters on the 1997–1999 2WD and 6.0 (5W-40 or 10W-50), 17 liters on the GT. One filter is cataloged for the 2WD, VT, Roadster, 2WD-4WD, SV and 6.0; it is not listed for the SE or GT pages we checked, so confirm by VIN | Oil filter 001505914 |
| Engine air filter | Replace every 48,000 km / 30,000 miles. Recommended at 24,000 km on cars driven on dusty roads or in heavy traffic | GT: replace every 12,000 km, and every 6,000 km in dusty or heavy-traffic use. Two required. Cataloged for every Diablo version from the 1991 2WD to the 6.0 | Air filter 07M133843 |
| Spark plugs (set of 12) | Replace every 48,000 km / 30,000 miles. Recommended at 24,000 km for dusty or heavy-traffic use | GT: replace every 12,000 km. One plug for the 1991–1999 cars (2WD, SE, VT, Roadster, 2WD-4WD and SV); a different plug for the GT and 6.0 | 001630289 for 1991–1999, or 0016003036 for the GT and 6.0, both sold each |
| Spark plug wires and injection/ignition wiring | Inspect wiring and connections at 2,500 km, 48,000 km, 84,000 km and 120,000 km. No replacement interval for the plug wires | Plug wires only on cars with a distributor cap: cataloged for the 1991–1993 2WD and 1994 VT. Some years need a different set, so confirm by VIN | Spark plug wires 006134023, made in the USA to OE specification (NLA, no longer available from Lamborghini; email us for alternatives) |
| Fuel filters | Replace at 84,000 km and 120,000 km; recommended at 48,000 km for dusty or heavy-traffic use | GT: replace at 48,000, 84,000 and 120,000 km. 6.0 USA schedule: recommended at 48,000, 84,000 and 120,000 km, required at 168,000 km / 105,000 miles. Two required. Cataloged for every Diablo version | Fuel filter 400201511A |
| Valve clearance | Check and adjust every 24,000 km / 15,000 miles | All five manuals | Workshop procedure |
| Camshaft drive chains | Inspect at 2,500 km, 96,000 km and 120,000 km; recommended checks at 24,000, 48,000 and 72,000 km | The V12 is chain-driven. No chain replacement interval appears in any schedule we read | Workshop procedure |
| Alternator and water pump belt | Check and adjust at 2,500 km, 48,000 km and 96,000 km; recommended checks at 24,000, 72,000 and 120,000 km. No replacement interval on the 1991–1999 schedules | GT: replace at 48,000 km and 96,000 km. 6.0 USA schedule: replace at 168,000 km / 105,000 miles. Split by VIN and version | 001725107 for the 2WD up to VIN 12582, 001731857 for the 2WD from VIN 12583 and the SE, or 001736516 for the Roadster, 2WD-4WD, SV and GT |
| A/C compressor belt | Covered by the accessory-belt checks above | Split at VIN 12042/12043 | 004529536 up to VIN 12042 (2WD and SE), or 004534071 from VIN 12043 (VT through 6.0) |
| Oxygen sensors and charcoal trap | Replace at 84,000 km / 52,500 miles | 6.0 USA schedule: replace at 168,000 km / 105,000 miles. The oxygen sensor is cataloged for every Diablo version; the charcoal canister shown is cataloged for the 6.0 | Oxygen sensor 0R1470226. 6.0 charcoal canister 400201799 |
| Brake and clutch fluid (DOT 4) | Replace every year; check at every service | GT and 6.0 schedules mark the change at 12,000 km and every 24,000 km after that, as well as yearly | DOT 4 fluid to your manual's specification (Agip Brake Fluid on early cars, ATE Typ 200 on later cars) |
| Brake pads, 1991–1994 2WD and SE | Inspect discs and pads at every service; replace by wear. Pipes and calipers every 24,000 km | Front pads are sold per rotor; rear pads are sold each | Front 003135292 and rear 003235293 |
| Brake pads, 1994–1996 VT and Roadster | Inspect at every service; replace by wear | Cataloged for the 1994 VT, 1995 VT Supplement and 1996 Roadster | Front kit 003136085 and rear kit 003236088 |
| Brake pads, 1998–2001 | Inspect at every service; replace by wear | The same four-pad kit fits front and rear on the 1998–1999 2WD-4WD, Roadster and SV, the GT and the 6.0 | Brake pad kit 0032000561 (NLA, no longer available from Lamborghini; email us for alternatives) |
| Parking brake pads | Check brake pedal clearance and handbrake adjustment at 2,500 km and every 24,000 km | Separate parking-brake pads on the early cars | 003331672 for the 1991–1993 2WD and SE, or 003334931 for the 1994 VT and 1996 Roadster (NLA, no longer available from Lamborghini; email us for alternatives) |
| Gearbox and differential oil | Replace at 2,500 km and every 24,000 km / 15,000 miles; check at 12,000 km | Includes the front differential on four-wheel-drive cars. Gearbox 3.5 liters, rear differential 1.7 liters, front differential 1 liter | Gear oils to your manual's specification |
| Coolant | Inspect the cooling system at 2,500 km and every 24,000 km. No replacement interval is printed | 15 liters of Agip Ecopermanent on every version we read | Coolant to your manual's specification |
| Power steering (and lift system) | Inspect at 2,500 km and every 24,000 km | Fluid change every year on the 1994–1995 VT; every two years on the 1997–1999 2WD, GT and 6.0. The 1991–1993 2WD schedule has no power steering row | Dexron-type fluid to your manual's specification |
| Air conditioning | Inspect every 24,000 km and check every year | 1991–1995 manuals: replace the refrigerant every year. 6.0 USA schedule: replace the A/C dust filters at every 12,000 km service, and at least every two years | Workshop procedure |
A Diablo's age often matters more than its mileage. The factory schedules ask for oil and filter at least once a year and fresh brake and clutch fluid every year, however few miles the car has covered, and rubber and fuel parts keep aging in the garage too.
If your car's service history is missing, the original warranty and maintenance booklet is worth having for the schedule alone. Several are VIN-specific, so have your VIN ready when you order one.
Diablo parts were revised by VIN, version and year, and some are now no longer available from Lamborghini. Check your VIN before ordering belts, plugs or brake pads, and ask us about alternatives for anything marked NLA.
For a broader walk-through of filters, brakes, plugs and fuel pumps, see our routine maintenance guide.
Bullstuff, also known as Lambostuff, is No Limits Solutions LLC in Xenia, Ohio. We stock the routine Diablo items: oil, air and fuel filters, spark plugs, belts, brake pads and the original warranty and maintenance booklets, and we track down alternatives for parts Lamborghini no longer supplies. Please confirm every interval against your own maintenance booklet before you book the work. If you are unsure which part fits your car, or want us to look one up by VIN, email us at sales@bullstuff.com with your request, and it will be handled promptly.