Generally when we see fresh oil in the exhaust
its from a leak at the turbocharger itself
check the intake and exhaust housings for fresh oil
if the oil is coming from the turbo seals it will have to be torn apart and rebuilt
otherwise it could be an issue with the air oil separator if the intake track is oily and not coming form the turbo
let me know, thanks.
it hasn't got a turbo
its a 97