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Author	Topic:   Four-stroke Lubricating Oil Loss
gbcbu	posted 05-06-2007 07:55 AM ET (US)         Did a search here and at Goggle but would still like to ask if anyone can tell me if and when they need to add oil to their 90-HP four-stroke EFI on a 170 Montauk. This is all new to me and I am just trying to guage when, if at all I'll need to add a quart during the season ( a season would be less than 100 hours). Checking before each use and everything is fine after 5 hours. Thanks
jimh	posted 05-06-2007 10:24 AM ET (US)             It seems that four-stroke outboard motors are known more for making oil than for losing it. There are reports of four-stroke outboard motor oil sumps increasing in volume with use due to gasoline contamination of the oil. Loss of lubricating oil does not seem to be reported as often.

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