Hi all. I am a yacht captain aboard a yacht with Cat 32 engines.We last removed the intercoolers and had them pressure tested in 2016/17 @hours 527 hours at a cost of approx 7000 Euros each engine. Service and removal and pressure test was 10,000 per engine. The yacht is 9 years old and now has 750 hours only. Engines from 2010, yacht was launched in 2011.I asked Cat for a quote to service the engines this year and I was informed that the intercoolers need to removed and tested again after 225 hours again they are asking 10000 each engine for service and removal of the intercoolers. I know Cat has issues with previous models but i simply can not understand why they are asking us to do this again at such low hours. When i ask them to explain why.. i am told that Cat ask us to remove and test every 2 years or replace every 6. When my engine Operation and Maintenance manual quotes ....every 1000 service hours> aftercooler core clean/test. nothing is mentioned about removal and test every 2 years or replace every 6. I simply cant understand how Cat expect us to pay 14000 every 2 years ..7000x 2 The engines are not under warranty but i still use Cat as i want the best service possible. Every year they are serviced, oil and coolant samples taken etc. I simply cannot understand these costs..!!! I need facts before i inform my boss he needs to spend another 20000 on the engines. I have asked Cat to explain why but nothing fore coming.. would anyone have any info? or have a contact number so i can speak to someone who can explain why? I have been a captain for 15 years and have never had to spend so much on engines!!! Thanks all.!!