Mahindra And Mahindra — oil cooler body

Address:

Pune, Maharashtra, 411038

Hello,
I am umesh have purchased the mahindra scorpio s6+ model
Mh12mb 0927 as on april 2015. From the date of purchase the vehicle has ran around 26000 km
During this period all the servicing has been done in the mahindra authorities service station in pune. Few days ago i comes to know that their is some leakages from oil cooler body as the vehicle is appointed to service station they have given me the advice to change the entire assembly which cost around 7 to 8 k. Now, the my question is that why should i pay for the this part as vehicle is under warranty and all the services was conducted in tge authorities service station.
I am complaining tge above issue since as none management was take care of this by giving the answer this is not under warranty. And noticeable thing is that the failure of this part only happens if oil filter get wrongly fitted on the assembly and this all work done by service station of mahindra.
So, i am requesting you to please look into this matter. Your one concern will be helpful to me and the other customers like me. If not let me proceed through consumer forum.
Waiting for reply..
Mob number :- [protected] mr. Umesh chavan