Thanks all again for the responses.

Seems like most of you feel that an engine flush is unnecessary and may actually harm the engine slightly. As a result, I have decided not to use it then.

I've been running it on plain oil and for 2800 miles, it hasn't consumed a drop!! As a result, I'd say I have no leaks. I'll bear your advises in mind as I perform the change.

Now, how about switching to synthetic differential fluid and synthetic ATF? Any comments on that? Thanks!