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  1. J

    2010 Merc 150 Optimax, oil supply question

    2010 Merc 150 Optimax. I encountered the standard 4-beep warning while slowly getting on plane. Main oil tank was about 1/3 full. Filled tank to 3/4 full. Then opened engine mounted oil tank cap and found the oil a little low (1/2 inch low, some air). Started engine and purged air from...
  2. J

    Oil reservoir Merc 150 Optimix DI

    The remote oil reservoir builds up a vacuum during operation, resulting in the audible alarm of the engine. I remove the cap to vent the reservoir, then resume. However, the cap states not to remove during operation otherwise damage may occur. Can someone tell me if venting the reservoir is...
  3. J

    Mercury remote oil tank

    I have a 2010 Merc 150 Optimax with remote oil tank. The tank does not vent, and I occasionally have to loosen the gap to free the vacuum and re-tighten it. Is there any fix for this ?
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