preventative oilcooler EGR replacment?
instead of an EGR delete (I do want to remain legal) it was recommended to me by the mechanic to have an oilcooler replacement as preventative measure. The truck (6.0 Powerstroke 2005) has now 90000 miles and there is no sign of anything wrong with it. I was told that most failures of sticking occur around that milage. They actually even recommend to do this every 30000 miles. There has been no such replacement till now on this truck.
The cost would be around 700 for work and 500 for parts (cooler and gasket kits..) if the EGR valve would have to be replaced as well on inspection there would be additional 130 for it.
As it is quite costly, should I have it done? What is your opinion about this?