kad300 heat exchanger and coolant flush

[Portofino]

Good advice - I was out in my 2004 Merry Fisher 925 (Volvo KAMD 300) with my wife and daughter last summer. Without warning the engine ground to a halt and stalled. Opened the engine hatches and she‘d dumped most of her oil in the bilges. It was a hot steaming mess. The culprit was the oil cooler which was replaced at a cost of around £1,200 but much cheaper than a new engine. I wonder if the engine switched off due to a pressure sensor or perhaps an oil level sensor? If I owned a similar engine I’d immediately replace the oil cooler irrespective of any problems. Any thoughts about the automatic switch off?

What “ automatic switch off “ You are right to raise the issue .
Unless there is / was a sort of oil pressure linked sensor , but Bandits responses would suggest other wise if I understood what he wrote correctly,
Imho it’s just luck pure luck it ceased by way of heat expansion to auto stop it .If so begs the Q what state the crank shell bearings are in , or how long they have in them ?
So on that line of thought how many hrs and what rpm have you done since the new oil cooler and said “ auto shut down“ ?

The rings / pistons lacking oil at the last moments expanded and ceased it before the “ automatic shut down “ .

 

[gordmac]

I believe VP say all the exchangers should be removed, cleaned and inspected every five years for D series.