Sludge on engine when oil cap removed

[2011 peugeot rcz]

Hi All,

Just a quick question.

I decided to change the oil myself after the last service and noticed thick sludge in engine. I purchased liqui moly engine flush plus but I'm worried if I add it then run engine for 15min and flush before putting new oil it might create huge problems and leaks. Can anyone help

Regards Rick

 

[Pedro]

Flush it & see what comes out at the sump it may need more than one treatment or flush then use a cheapish oil run car for 50=100 klm then flush it again as there is a lot of crap on those cams but you may need to change filters as you progress

 

[2011 peugeot rcz]

Thank you will do and hopefully it cleans it up