Topping up the Gearbox Oil Parts Halfords Classic Oil 20w50 Cost £5 Every 6000 MIles / 6 months Renew Gearbox Oil Every 24000 Miles / 24 Months If found it was easier to remove the center console to get access to the gearbox dipstick blanking plug (AHH6507). Access to the Gearbox Dip Stick Gearbox Dip Stick Once the plug has been removed you can remove the Gearbox Dipstick (22B549). With the dipstick removed & funnel in place, it is ready to be topped up. Topping up the Gearbox Oil Advent Baby Bottle After gaing access to the gearbox dipstick, I realised putting the oil in would be tricky due to the space restrictions. Had a quick hunt around the garage, went in to the house & asked the wife if she had a small bottle/contatiner. The best she came up with was a plastic takeaway tray. Then I spotted exactly what I needed, so when she had disappeared I grabbed it. An Advent 125ml baby's bottle (I am sure the little fellow would not mind he has plenty). It was perfect & even has ml's & fl oz's on the side so you can tell how much you have put in. Saves splashing out on the expensive pouring jug sets.