WallyGator12000 Posted September 1, 2009 Share Posted September 1, 2009 Hey guys,Just changed the oil on my 1996 mercury 9.9 four stroke I bought a few weeks ago. The oil was quite dirty. I bought Amsoil AFF 0W-40, specifically for four stroke engines. Now I am getting a lot of smoke, before I changed the oil I wasn't getting much at all. The old oil was four stroke, but petroleum. The motor is running nice, and I have checked the dip stick and my oil level seems fine (can be tough to read with how clear amsoil seems). But I put 1 quart in, which is about how much came out. I am hoping it is just the old oil burning off, but want some opinions, any thoughts? Did I do something wrong? Quote Link to comment Share on other sites More sharing options...
boatfixer Posted September 2, 2009 Share Posted September 2, 2009 Amsoil makes a 4 stroke 10w-40 Marine oil. Maybe the 0w-40 is too thin?Did you lay it down at all by any chance? Quote Link to comment Share on other sites More sharing options...
broken_line Posted September 2, 2009 Share Posted September 2, 2009 over fill or have it tilted wrong? Quote Link to comment Share on other sites More sharing options...
WallyGator12000 Posted September 2, 2009 Author Share Posted September 2, 2009 Never laid it down or tilted the motor while changing the oil, it stayed on the transom like always. I may try to switch to the 10W-40, do you guys think I should do that right away, or should I try running the motor for a trip or two and seeing how it performs or if the smoke clears up? Quote Link to comment Share on other sites More sharing options...
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