When it comes to refilling I always use a long length of plastic tube and feed it down through the engine bay and insert it to the filler hole. Attach the oil bottle to the tube and feed the oil down the tube by squeezing the bottle. Once it overflows extract the tube and fit the plug back in the box. Do this on the Z3 and Z4. You always need to buy 2 bottles of oil to get the right amount into the box. There should be a label on the side of the gearbox to indicate what type of oil the box takes, either gearbox oil or ATF. Owners handbook should also list what is required. If you go to the Opie Oils website that can list the recommended fluids based on the model of your car. Also if you buy from Opie put the code in for the Forum discount.
Example for a 2.5 car here, just change vehicle to yours
https://www.opieoils.co.uk/c-337-oil-fluids.aspx
Personally I tend to use Millers Oils fully synthetic for gearbox and engine, Engine filters are usually Mann brand as these come with the O rings for the filter stem, others do not include these.
Example for a 2.5 car here, just change vehicle to yours
https://www.opieoils.co.uk/c-337-oil-fluids.aspx
Personally I tend to use Millers Oils fully synthetic for gearbox and engine, Engine filters are usually Mann brand as these come with the O rings for the filter stem, others do not include these.
Attleborough, Norfolk
