Hello and Welcome -
My name is ***** ***** Im happy to help / advise you on this.
This is a common issue on this range of engines Im afraid - At 100k while thats average mileage for the year - less than in fact - what you have is either worn hydraulic lifters - or, worn oil pump.
The way to determine which is to have an oil pressure test done. This involves removal of the oil pressure switch and screw a gauge in... then start the engine and read the pressure you have - thus them you can determine if the pressure is at spec or not... and go from there.
If its too low or erratic - then you have a worn oil pump that will need replacing. Not Note though - I see you have changed the oil - but be sure to try a new filter as well first... and be sure you are using the correct grade oil..
The specs are as follows for you :
Engine oil grade
Preferred synthetic oils:
- -20°C - +40°C = 10W-30, 10W-40 (ACEA = A3)
- -30°C - +40°C = 0W-30, 0W-40, 5W-30, 5W-40, 5W-50 (ACEA = A3)
For your reference - the oil pressure should be bar/rpm:1,5/850 rpm.
If of course the pressures are ok on test , then you have worn hydraulic lifters that are not good enough to hold the oil / pressure - Renewal is the only answer then of those.. not a cheap / easy task Im afraid - I cant tell you prices as garages charge differently all around the UK - I would advise if it comes to this ( and for an oil pump change if its that ) to ring around and get prices - you can save a lot of money that way.
So those are the ways forward on this now to get this sorted for you.Im very pleased to have helped you -
Let me know if you need anything more-
note - if you do need anything more, I will be off for a break now - I will be back later though - if you reply , I will get back to you asap thereafter / later....** ** >>Meantime -- - - >>
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for me - Thank you
in advance for that...
You can and are most welcome to get back to me anytime you might need - clicking the OK ratings does not close you out at all..
Kind Rgds, MIKE.