Right, besides the PCV system, check also valve stem seals and piston
rings. The rings can be checked with a compression test.

If you have valve stem seal leaks usually the first start after a long
park is bluish tinted smoke from the exhaust.

do your spark plugs look oily?


On Aug 18, 11:28*am, Bob Dodds <13013do...@googlemail.com> wrote:
> My son has a UK Honda Civic SE sport 1.6 2002. It's now done 108,000
> miles and started using oil in the engine, roughly about a litre every
> 1000 mile. It starts, runs well with no obvious leaks and doesn't
> throw a lot of black smoke out the exaust. Also well serviced and the
> emmissions were not a concern at the last MOT. Is this normal for a
> Civic starting to show its age or do we need to be looking at
> anything.
>
> Thanks
>
> Bob