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How to change manual gearbox oil on OPEL Astra G Van (F70) – replacement guide
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Recommended replacement interval for the part category Transmission fluid : 50000 km
Important!
This replacement procedure can be used for:
OPEL ASTRA G Box (F70) 1.7 DTI 16V (F70), OPEL ASTRA G Box (F70) 1.6 (F70), OPEL ASTRA G Box (F70) 2.0 DI (F70), OPEL ASTRA G Box (F70) 1.7 TD (F70), OPEL ASTRA G Box (F70) 1.6 (F70) … View more
The steps may slightly vary depending on the car design.
OPEL ASTRA G Box (F70) 1.7 DTI 16V (F70), OPEL ASTRA G Box (F70) 1.6 (F70), OPEL ASTRA G Box (F70) 2.0 DI (F70), OPEL ASTRA G Box (F70) 1.7 TD (F70), OPEL ASTRA G Box (F70) 1.6 (F70) … View more
The steps may slightly vary depending on the car design.
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Gearbox Oil and Transmission Oil for ASTRA G Box (F70) and other OPEL models
Alternative products

Wire brush
All-purpose cleaning spray
Cleaner&thinner
Sealant
Drive socket # 11
Drive socket # 12
Drive socket # 16
Ratchet wrench
Torque wrench
Seal scraper
Funnel
Oil drain pan
Hydraulic transmission jack
Fender cover
Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). AUTODOC experts recommend:
- All work should be done with the engine stopped.
Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). Take the following steps:
- Step 1Open the hood.Step 2Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.Step 3Lift the car using a jack or place it over an inspection pit.Step 4
Support the engine skid plate. Use a hydraulic transmission jack. - Step 5
Undo the fasteners of the oil pan lower cover. Use a drive socket #12.Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). AUTODOC recommends:To avoid injury, hold the engine skid plate cautiously tight when unscrewing the fasteners and when lowering the hydraulic transmission jack. - Step 6
Remove the hydraulic transmission jack. Remove the oil pan cover.AUTODOC recommends:Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). Lower the transmission jack smoothly, without jerks, to avoid damaging components and mechanisms. - Step 7
Clean the transmission fluid pan. Use a wire brush. Use all-purpose cleaning spray. - Step 8
Prepare a waste oil container with at least 2 l capacity. - Step 9
Unscrew the fasteners of the transmission fluid pan. Use a drive socket #11. Use a ratchet wrench. - Step 10
Remove the transmission fluid pan.Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). Tip:When removing the transmission fluid pan, incline it so that the fluid only comes out from one side of it. - Step 11
Drain the used oil.AUTODOC recommends:Wait until the fluid has completely run out of the pan. - Step 12
Clean the mounting seat of the transmission fluid pan. Use all-purpose cleaning spray. - Step 13
Remove the transmission fluid pan gasket. Use a seal scraper. - Step 14
Clean the mounting seat of the transmission fluid pan gasket. Use a wire brush. Use cleaner&thinner. - Step 15
Apply sealant to the mounting seat of the transmission fluid pan gasket. Install the new transmission fluid pan gasket. - Step 16
Treat the mounting seat of the transmission fluid pan. Use cleaner&thinner.Replacement: manual gearbox oil – OPEL ASTRA G Box (F70). Tip from AUTODOC:Prevent fluid from getting on the mounting seat of the transmission fluid pan. - Step 17
Install and fasten the transmission fluid pan. - Step 18
Tighten the fastening bolts of the transmission fluid pan in a criss-cross pattern. Use a drive socket #11. Use a torque wrench. Tighten it to 20 Nm torque.
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