Transmission blog

Articles on transmissions, maintenance and repair — search by model, oil, fault code (e.g. P17BF) or keyword.

Automatic transmissions

BMW GA8HP Oil Change Guide Overview

GA8HP Service: Lifetime filling myth Typical notes: Gearshift jerk after 80–120 tkm Practice: Oil level at operating temperature Cost framework: 300–650€.

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Automatic transmissions

ZF 8HP50 vs 8HP75

8HP50/75: Torque classes different Typical notes: Overheating if the cooler is too weak Practice: Additional cooler for trailers Cost frame: Maintenance allowance...

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Automatic transmissions

ZF 6HP28 typical damage

6HP28: 6-speed ZF classic Typical notes: Jerk 2–3, oil leaks on the plug Practice: Mechatronics seal set Cost framework: Mechatronics 800-2,000€.

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DSG & dual-clutch

Read and replace DSG mechatronics

Mechatronics: Hydraulics + electronics as a unit Typical notes: Error codes, fail-safe, gears missing Practice: Only suitable parts and coding Cost frame: 1....

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DSG & dual-clutch

Difference wet vs dry DSG

Wet/dry: Wet: oil-cooled; Dry: without oil bath clutch Typical notes: Dry: jerking; Wet: oil quality critical Practice: design before purchase/service clarified...

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DSG & dual-clutch

Mercedes Speedshift DCT

Speedshift DCT: Sport-DCT in AMG models Typical notes: Hard shifting, oil temperature Practice: Taking AMG service intervals seriously Cost frame: Service/R...

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DSG & dual-clutch

Hyundai/Kia DCT 7-speed

7DCT: 7-speed dual clutch Typical notes: jerking in cold, software bugs Practice: Check ECU update Cost frame: clutch 1,800-3,500€.

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DSG & dual-clutch

Renault EDC Dual Clutch

EDC: 6-/7-speed EDC wet/dry per variant Typical notes: jerking, emergency program, sensor error Practice: Adhere to oil change for wet variants Cost frame: R...

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DSG & dual-clutch

Ford Powershift DPS6 Issues

DPS6: Dry clutch, 6 gears Typical notes: jerking, rattling, clutch wear early Practice: Check clutch set and master cylinder Cost frame: Clutch...

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