Servicing a OEM water pump

[QLDR31]

I know its a dumb question.

Just wondering if grease can/should be pumped into the pump?

There are no grease nipples but there are two holes.

What are those holes for?

[tridentt150v]

No, the water pump is a 'sealed' unit, sealed bearings etc.  You don't service it, you replace it when it starts to leak or gets noisy.

And if you decide its time to replace it then -  if your smart - you will buy a kit that includes idler pulley and timing belt etc etc.  There are tutorials in the Tut section detailing the job.

And a hot tip, buy a genuine Nissan water pump, they last longer.  The chinese/brazilian versions are cheaper but lucky to last 12 months.  Also try to get a proper RB25/26 un it rather than the RB30 version, both will fit but the dirty 30 version takes one less mounting bolt....and this is where your water pump will leak first.