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Is running a Mercruiser 7.4 engine at 4k rpm harmful? Mercruiser Engine 7.4

Last updated: Saturday, December 27, 2025

Is running a Mercruiser 7.4 engine at 4k rpm harmful? Mercruiser Engine 7.4
Is running a Mercruiser 7.4 engine at 4k rpm harmful? Mercruiser Engine 7.4

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