Hi Koala,
Actually, I don't think many pple do what you do, I mean as in top
up the engine oil after every 4-6 weeks.
Good engine oil suppose to last you 10,000km (Can be slight more,
but every mechanic ard will tell you 10,000km).
The reason why don't top uo is becos engine oil will get very
'dirty' and becomes milky after running for a long time. And in
order to change the engine oil, its better to drained away all the
old oil before puring in new one.
What you are doing defeats the purpose in this sense, as the bottom
oil becomes dirtier, you only top up with new one. It's still dirty
in one sense, get what I mean?
And, its very troublesome to keep checking. I'll suggest you can
check evey 2000-3000km, but don't think they will get dirty so
easily. I have hit 7000-8000lm now for my car and I did a check on
it last week, still quite clean, and above the minimum standard
line, so can still last.
Therefore, I'll advise you to do a full servicing, and leave it
alone. Wait till its abt 10,000km before you check again. What I'm
saying does not include brand new cars, as they needs servicing
more often, until after 10,000km in mileage.
By the way, if you are using a lower grade engine oil, it'll be
every 5000km.
And yes, I'm currently using Shell Helix Ultra as well.
