I had the LR3 which had a cast iron block... Went forever and is still going thanks to a DYI'r who is the second owner. It has over 350K. LR4 is an aluminum block. So you must watch all the coolant pipes... Even with low miles the years take a toll... So make sure to watch and RR and RR as needed. I had this issue with a 5.0 SC and it only had 35K but it was a 2018. If you are not going to work on it yourself it is going to be very expensive...