Posts: 32934
Location: Rhinelander, Wisconsin | The Opti gets better fuel economy, and when required maintenance is figured in, breaks even or just beats the 4 stroke in out of pocket costs. I owned a Merc 4 stroke and loved it, but it was slower and weaker out of the hole. The total lack of any sound at all at idle was nice. WOT she was still a motor.
Nothing about the 4 stroke build indicates they will outlast a DFI. Both are engines that run at basically two speeds..WOT and Idle, and that is tough on any engine. I have a 1974 two stroke that is still running strong. Long enough for me, I guess.
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