BMW Motorrad Hypoid Axle Oil G3 Gear Oil for Cardan, 0.5L
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Video of the complete final drive service:
Times in the video for individual tasks:
1:15 - 2:20 removal of the fender, loosening the fill screw, loosening the drain screw - you will especially need Torx keys of various sizes, which you can find in the Honiton set
3:30 - 6:40 removal of the wheel, brake caliper, lowering the final drive, disconnecting the shaft
6:54 - Castrol Optimol - lubrication of the splined shaft
8:06 - Staburags - gluing the boot
8:50 shaft connection
10:40 returning the boot to the correct position (if it is damaged, cracked, replace it with a new one (rear boot R1250GS/A, R1200GS/A LC 2013-2018, rear boot R1200GS/A 2004-2012, rear boot R1150GS/A, R1100GS))
11:00 - 13:20 installation of all components back, including specified torque settings - you will need a torque wrench
13:35 - fill with 180ml of suitable oil (we recommend Castrol 75W-140, or Motorex Penta LC 75W-140 or original BMW Hypoid Axle Oil G3). To fill precisely, use a syringe.
A brief discussion about gear oils:
Specifications of gear oils
Viscosity
The viscosity properties of gear oils are rated using the SAE (Society of Automotive Engineers, USA) specification. This standard is used to classify oils into 4 winter grades, designated by a number followed by "W" (from English Winter), and 5 summer grades denoted by a number.
Winter grades: 70W, 75W, 80W, 85W
Summer grades: 80, 85, 90, 140, 250
If only one grade is used in the designation, it means it is a monograde oil (summer or winter). When a combination of summer and winter grades is used (e.g., 80W-90), it is a multigrade oil, or all-season oil. More often than motor oils, manufacturers require monograde gear oils.
Performance categories
The performance categories of gear oils are indicated by the API (American Petroleum Institute, USA) classification. The designations for performance classes consist of the letters "GL" (from English Gear Lubricant) and a number indicating the performance level, of which there are six.
Currently, the following four performance classes are used:
GL-3 - low additive oils for manually shifted gearboxes with medium load
GL-4 - highly additive oils primarily for manually shifted gearboxes and lightly loaded hypoid drives
GL-5 - oils intended for heavily loaded hypoid drives, operating under the most demanding conditions oils exposed to variable shock loads
GL-6 - oils for hypoid gears operating in extreme conditions. They are still very rarely used.
Comparison of viscosity classifications of SAE transmission and engine oils
Viscosity classes of transmission oils according to SAE J306A
How to properly choose transmission oil?
When selecting transmission oil, the same principles apply as when choosing engine oil.
1. The first principle when selecting transmission oil is to follow the manufacturer's instructions, which are included in the manual for each vehicle. Only the manufacturer of the gearbox (vehicle) can responsibly state which oil can be used. Practically no manufacturer recommends a specific brand of oil (as this is contrary to competition laws in the European Union). Gearbox manufacturers (of cars) recommend oils based on performance specifications, e.g. API GL-4, API GL-5, and viscosity specifications SAE, e.g. 75W, 80W-90.
2. For such recommended oils, the change intervals are then set (usually 10,000 km or 1 year).
3. If you do not have the vehicle manual, ask the manufacturer (at the Czech importer headquarters) of the vehicle. Remember, the vehicle manufacturer does not recommend a brand of oil, only performance and viscosity specifications.
Data sheet
- Manufacturer:
- BMW
- Type of consumable material:
- Cardan and everything around it
Oils
Specific References
- EAN13
- 83222460128