Engine oil capacity
8 L
- Oil change with filter
Mercedes-Benz SL320 R1293.2 litre · 165 kW
May 1998 – Oct 2001 · Convertible · Petrol · 129.064
Oil, coolant and a checklist for your next service.
Oil & coolant
Coolant capacity
11.75 L
- Total system capacity
Engine oil specification
Not available for this version
Coolant specification
MB 325.6 or MB 326.6
- MB 325.6: concentrate, dilute before use
- MB 326.6: premixed, do not add water
Do not mix different coolant types. Let the cooling system cool before opening the reservoir. Check the level after filling. The capacity shown is not a top-up amount.
Engine & gearbox
Engine code
M 112.943
- 3,199 cc · 6 cylinders · 18 valves
- Naturally aspirated · intake manifold injection/ carburettor
- Bore × stroke 89.9 × 84 mm
- Compression 10:1
Drive
Rear-wheel drive
Automatic gearbox fluid
MB 236.14
- 5G-TRONIC (722.6)
Rear axle oil
1.1 L
Brake fluid
DOT 4
The gearbox figure is the quantity listed for the gearbox. A fluid change usually takes less, so fill to the correct level rather than to the figure.
Fluid capacities for Australian models
| Australian model | Automatic gearbox | Differential | Brake fluid |
|---|---|---|---|
| SL320 (R129), 3.2 Litre V6 SOHC 18V Eng., Automatic (1999-2001) | 8 L (dry fill) | 1.1 L (refill) | 0.5 L (refill) |
From the FUCHS lubricant guide for Australian models. A dry fill is the quantity for an empty unit; a fluid change takes less. A refill is the quantity for a normal fluid change.
When to service & replace parts
For jobs with both a time and a kilometre limit, use whichever comes first.
Replacement intervals
| Part or fluid | When to replace it |
|---|---|
| Engine air filter | More than 80,000 km or 4 years |
| Brake fluid | Every 2 years |
| Fuel filter | More than 80,000 km (50,000 mi) or 4 years since last change |
Service checklist
A service checklist is not available for this version.
Brake discs
| Axle | Disc size | Type | Minimum thickness | Applies to |
|---|---|---|---|---|
| Front | 300 × 28 mm | Vented | 25.4 mm | Without sports package |
| Front | 334 × 32 mm | Vented | 30 mm | With sports package |
| Rear | 300 × 22 mm | Vented | 19.4 mm | All versions |
Size is diameter × thickness. Replace a disc before it wears to its minimum thickness, which is also marked on the disc itself. Where two sizes are listed for one axle, the car's equipment decides which it has: measure the disc to be sure.
Wheels & tyres
Stud pattern
5 × 112
- Number of bolts × circle diameter (mm)
Wheel bolts
M12 × 1.5
- 17 mm hex head
Factory wheel and tyre sizes
| Wheel | Tyre size | Rim | Fitted to |
|---|---|---|---|
| 16-inch | 225/55 R16Mercedes-approved (MO) tyres listed | 8.0J × 16, offset ET34 | Front and rear |
| 17-inch | 245/45 R17Mercedes-approved (MO) tyres listed | 4.0J × 17, offset ET34 | Front and rear |
Sizes the parts catalogue lists for this car. A "Rear" row is the wider rear tyre on cars with different sizes front and rear. Your tyre placard, on the driver's door pillar, gives the sizes and pressures for the wheels your car was built with.
Bulbs
| Light | Bulb | Applies to |
|---|---|---|
| Headlight (low beam) | H4 · 60 W | Halogen |
| Headlight (low beam) | D2S xenon · 35 W | Xenon |
| Headlight (low beam) | H4 | — |
| High beam | H4 · 55 W | — |
| High beam | H4 · 60 W | Halogen |
| High beam | H1 · 55 W | Xenon |
| Indicator, front | PY21W · 21 W | — |
| Indicator, rear | P21W · 21 W | — |
| Parking / position light | W5W · 5 W | — |
| Brake / tail light | P21/4W · 4 W | — |
| Brake light | P21W · 21 W | — |
| Third brake light | W3W · 3 W | — |
| Reverse light | P21W · 21 W | — |
| Rear fog light | P21W · 21 W | — |
| Rear fog / tail light | P21/4W · 21 W | — |
| Interior light | C5W · 5 W | — |
Check the bulb you take out before buying a new one. Halogen, xenon and LED headlights use different bulbs, and LED lights usually have no bulb to replace.
Battery
| Case size (L × W × H) | Capacity | Cold cranking | Share of listings |
|---|---|---|---|
| 353 × 175 × 190 mm | 100 Ah | 850 A (EN) | 46% |
| 278 × 175 × 190 mm | 70 Ah | 760 A (EN) | 33% |
The main battery sizes listed for this car, most common first. The right one depends on the car's equipment, such as start-stop, so match the size, capacity and type printed on the battery you are replacing.
Spark plugs
Number
12
Thread
M14 × 1.25
Tightening torque
28 Nm
Engine, gearbox, brake, wheel, tyre, bulb, battery and plug details come from the TecDoc parts catalogue for this exact vehicle (TecDoc vehicle 9432). Where suppliers' listings disagree, only the clear majority is shown.
Parts for this car
12 in stockEvery part we stock that the TecDoc catalogue lists for the SL320 R129 3.2 litre · 165 kW. Build date and factory options can still affect fitment, so check the fitment table on a part before you order.
Brakes1 part
-
In stock$12.00
Engine & cooling4 parts
-
In stock$29.00
-
Low stock$14.00
-
In stock$38.00
-
In stock$8.90
Suspension & steering1 part
-
In stock$55.00
Electrical1 part
-
Low stock$33.00
Body & interior5 parts
-
In stock$1.70
-
In stock$1.60
-
In stock$1.80
-
In stock$4.40
-
In stock$2.60
Keep a record of this service
Print the specifications and checklist with your registration, VIN, mileage and the products you used.