Don't forget to place a suitably sized receiving tray beneath
Using a 15mm 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 the sump plug and washer. Do not over tighten
Find a Haynes product for your Vauxhall:
Search by registration mark
Search by make & model