Drain the coolant.
Remove the oil filter.
Fig. 2.204. Removing the oil cooler: 1 – water hose; 2 – oil cooler housing
Remove the oil cooler (fig. 2.204).
Use a clean rag to wipe the seating surface on the oil cooler.
Install in the reverse order of removal.
Check the oil level. Top up if necessary.
(The article is copied from the resource www.mazbook.ru)
Start the engine and check for oil leaks. If there is a leak, identify the defective part, repair or replace it.