Engine flushing?

[cinqster]

I want to change the oil in my Cinquecento turbo from it's running-in oil (Castrol GTX) back to Mobil 1 which I used to use before its rebuild.

Should I use a flushing oil first, and what do people suggest? I'm a bit reticent about using some of the products available incase it leaves a residue - I had a Manta engine expire many years ago due to good old Slick 50 additive!

Cheers,

John S.

[cinqster]

Thanks Matt,

Any joy with the Cappuccino BTW?

John S.