The warranty covers the engine as long as the cooling system, fuel system or turbo are not responsible.
Now as i cannot see your engine or do not know what condition your components are in i could not possibly say what else you need.
Mudski is the man in the know when it comes to the zd30 and what parts might cost so maybe he could tell you more.
I have done what i can with what time and resources i have and is very limited and without looking at your car or having the strip down process happening its all guess work.




