Oil change Vauxhall Insignia 2008 - 2012 | Haynes Manuals
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The sump plug located on the base of the engine. It is accessed underneath the car
Undo the fixings - use a Phillips screwdriver and 7mm socket
Here's the sump plug
Don't forget to place a suitably sized receiving tray beneath
Using a 13mm spanner or socket, carefully remove the sump plug and fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel and refit a new sump plug and washer
Do not over tighten