Volvo vs. Lehman
I've never owned a boat with Volvo engines. My current Hatteras 48 LRC has Lehman 120's (I understand only 2 of the Hatteras 48 LRC's had them) and I have been extremely pleased with their performance and durability. We cruised the Sea of Cortez and the Mexican mainland for 10 years putting many hours on the 30+ year old engines with minimal issues. Even though they haven't manufactured the engine in many years, aftermarket parts are easy to find and reasonably priced. We needed to rebuild one of the engines due to a cracked piston that was my fault (sucked a plastic bag into the sea water intake) and didn't clear out the bits and pieces of impeller in the oil coolers and heat exchanger. New oversized pistons, rings, etc were shipped to Mexico and arrived in less than a week. Keep them from overheating, change the oil regularly and keep clean fuel running through them and they will last you 10,000 hours