Do I ask for an engine diagnostic first....do I bother to repair..engine only 102,000 km

If the engine light is on then yes have scanned to start with.

it could be bad rings

or valve seals and guides

The check engine light never comes on, only the oil light when it is really low on oil. Sounds expensive...

If it uses that much oil it's time for a new motor or new car.

I was afraid of that. For 15 years it has been a great little car and I am surprised it would need a new motor with 102,000 kilometres on it. A couple years ago, mechanics doing a tune-up told me they were impressed by the shape of this vehicle and it was like a 3 year old car. Hmmmmmmm! Never know do we. Thanks everyone.

If you want a car to last, maintenance is a must.

My car lasted 15 years and I thought I took care of it pretty well. I always followed the maintenance instructions, changed oil when needed and filters and fuel filter, cleaned air cleaner, flushed this and that, tuneups.