Sorry to sound thick so no oil goes in the filler in the pic I drained the oil out of the drain plug is what made me think it needed it I am a learner so sorry for confusion
Cheers for your reply Ken and karen
The oil in a CAV governor (or injection pump as the pneumatic governor at the back end of the pump does not contain oil), as fitted to the DAF 475/575/615 range of engines, should be changed at the same time as the engine oil is changed, using the same oil as in the engine. (the Bosch pump as fitted to some engines mainly the factory marinised versions, is lubricated by the engine oil system, so no servicing is necessary).
The oil is drained from the pump by removing the plug at the lower rear end of the pump, not the plug above it as this is the fuel bleed plug for the pump - you will need a container to catch this oil as it runs out. A very messy job as the oil runs down the face of the pump and is hard to catch. Use a baby's nappy as this will absorb much of the oil.
The oil is replaced through the large plug on top of the front end of the pump (this is also the breather for the pump) - using the smallest funnel you can find to make this easier and cleaner. When the pump is full the oil will siphon out of the curved pipe at the front of the pump until the correct oil level is reached.. You'll need a large tin to catch this overflow which will need to be left there as the oil in the pump warms up and expands. I don't measure the amount of oil I put in, but memory tells me that it's in the order of 0.75litres.
I've never heard of a DAF Sahara engine - research on line suggests that this may be an engine fitted to a DAF truck of this name.
For more info on DAF engines I suggest that you consult all the DAF data on the DBA website, in the library section.