I thought I'd post this in case anyone might need some info on the aftercooler maintenance on a 2008, 48 Sundancer. I pulled my port side aftercooler today for routine maintenance. I bought this boat last March and it had no record of ever having the aftercoolers actually taken off and sent for maintenance. It did have records of having acid flushes done and the engines run great with no temp issues at all. When I bought the boat, I knew I was going to do this regardless just because of all the horror stories I'd heard from not doing it. Also, the boat has now been in freshwater for 9 months so I'll probably never have to do this again and wanted to document the maintenance for the next owner (when I move up..lol). I had the hardest time finding any 48 Sundancer that had maintenance records for this. Anyhow, after removing and opening the aftercooler up, I was shocked at how good it looked. I took a flashlight and shined it down the tubes and everyone of them was clear. Regardless, I'm going to have the core removed, cleaned and then the unit pressure tested. Now, my biggest concern is how the hell am I going to get back behind the Starboard engine to do it. Also, the most difficult part to this was removing the fuel/oil cooler. It has to be removed to get to the bolts for the aftercooler. I'll also be sending that in for maintenance while I'm at it. Let me know if you have any questions, I'd be glad to help!