Castrol MTX Synthetic Gear Oil 75W-140 1L (for final drive - cardan)

Name: Castrol MTX Synthetic Gear Oil 75W-140 1L (for final drive - cardan)
Brand: Castrol
SKU: 75W-140mtx
Price: 19.25 EUR
Availability: InStock

Brand: Castrol

Reference: 75W-140mtx

Převodový olej Castrol MTX Synthetic 75W-140 1l (pro koncový převod - kardan)

€19.25

€15.16 excl. VAT

Delivery to the EU usually takes 2–5 days.

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Castrol MTX Synthetic Transmission Oil 75W-140.

1 liter
suitable for gearboxes - especially for final drives (cardan)
meets all necessary standards (API GL-5)

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Fast shipping via DHL (and partners). If in stock, 2–7 days across the EU.

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+420 604 111 341 info@mojegs.cz

Description
Product Details

Video of 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 primarily need Torx of various sizes, everything can be found 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 - attaching the boot.

8:50 shaft connection.

10:40 returning the boot to the correct position (if damaged or cracked, replace with a new one (rear boot for R1250GS/A, R1200GS/A LC 2013-2018, rear boot for R1200GS/A 2004-2012, rear boot for R1150GS/A, R1100GS).

11:00 - 13:20 reassembly of all components, including specifying torque values - 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 the original BMW Hypoid Axle Oil G3). For precise filling, use a syringe.

Short treatise on gear oils:

Specifications of gear oils
Viscosity
To evaluate the viscosity properties of gear oils, the SAE specification (Society of Automotive Engineers, USA) is used. This standard is applied for the classification of oils into 4 winter grades, marked with a number and “W” (from English Winter), and 5 summer grades marked with 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 that 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 or all-season oil. More often, unlike motor oils, manufacturers require monograde gear oils.

Performance categories
Performance categories for gear oils are labeled using the API classification (American Petroleum Institute, USA). The performance class designation consists of the letters “GL” (from English Gear Lubricant) and a number indicating the performance level, of which there are six.

The following four performance classes are currently used:
GL-3 - low-additive oils for manually shifted transmissions under medium load
GL-4 - highly additive oils primarily for manually shifted transmissions and lightly loaded hypoid gears
GL-5 - oils intended for heavily loaded hypoid gears, operating in the most...In more demanding operating conditions, exposed to varying shock loads
GL-6 - oils for hypoid gears operating in extreme conditions. Currently, they are used very rarely.

Comparison of viscosity classifications of SAE gear and motor oils

Viscosity grades of gear oils according to SAE J306A

How to properly select gear oil?
When selecting gear oil, the same principles apply as when choosing motor oil.

1. The first principle when selecting gear oil is to follow the manufacturer's instructions provided in the manual for each vehicle. Only the gearbox manufacturer (of the vehicle) can responsibly state which oil can be used. Practically no manufacturer recommends a specific oil brand (this contradicts competition laws in the European Union). Gearbox manufacturers (of vehicles) recommend oils according to the so-called performance specifications, e.g., API GL-4, API GL-5, and viscosity specifications from SAE, e.g., 75W, 80W-90.
2. For such recommended oils, the change intervals are then determined (usually 10,000 km or 1 year).
3. If you do not have the vehicle manual, ask the manufacturer (at the Czech headquarters of the importer) of the vehicle. Remember, the vehicle manufacturer does not recommend a specific oil brand, but only the performance and viscosity specifications.