I had 6V53 naturals in a previous boat. They ran great. Parts are cheap. Don’t know about the turbos. They tend to leak and blow oil mist. We made our own version of Airseps and it took care of the oil mist. They sound very throaty and great. I ran mine so we had about 9 knots and we used about 6 GPH in a 46’ cockpit motoryacht. Overall if you keep them clean they are fine. Almost any diesel mechanic can work on them.
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