thanks for the reply. last and first service was done 2,000 odd kms ago. i haven't noticed any oil leaks, don't check under the car anymore because it's "new", i'll check the oil level in the morning. would toyota fix this "problem" under warranty? or are tappets considered a deteriorating item? i know there isn't much harm in noisy tappets, but it's annoying as it's a new car..