Right guys I need some advice.
So this morning I got the amber oil light one when arriving to work, checked and it wasn't excessively low but took another litre of oil no problem.
Now I know the 6 pots do tend to use a bit of oil, and I know bmw say 1 litre per 1000miles is acceptable but... I topped up start of january, not sure exactly when or exactly how many miles i've done since but it would be a maximum of 500 miles!
Did a bit of research as the two previous E46 6 pots i had never used a drop.. The 2 most common issues coming up appear to be rocker cover gasket leaking or CCV valve blocked/stuck.
Car performance is fine, no issues in how it's driving.. warms up fine, idles smoothly, not erratic idle at all and the temperature gauge once at running temp doesn't fluctuate.
No blue smoke, no other issues to note.
I can't see any signs of an oil leak, although a couple of times in traffic i've had window down and smelt a slight smell of burning oil so maybe the oil is leaking from rocker cover gasket and burning off on the exhaust manifold or somewhere around there????
Someone give me some checks I can do to narrow down the issue before seeking further help? I've also seen u can check the CCV valve by undoing the oil filler cap whilst engine is idling and seeing if its difficult to remove...???? If it is like a vacuum I believe that means the CCV valve needs replacing?