Engine Flush

[liyux2k]

Hi, I've recently gotten a oil change through a local Mr.lube. They are suppost to be warrenty approved and they offer a "engine flush". Which a cleaner is put in to runs it for a few minute and drains out. Anyone ever tried this kind of service? my car only has 10,500km on it and they said it's got sludge even tho my last oil change was 5,000k. The bad thing about it is i read if engine has a lot of deposites and if a large piece of sludge breaks off and clogs so breaking engine but only 10.5k i think shouldn't have any large pieces breaks off? Anyways Money isn't a problem as it only cost $20, but would it ruin my engine or void warrenty? They say is warrenty approved but i don't know very worried and confused!