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  VERADO: Chronic Problem with Making Oil

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Author Topic:   VERADO: Chronic Problem with Making Oil
tmckay posted 04-23-2010 03:46 PM ET (US)   Profile for tmckay   Send Email to tmckay  
My 2007 Mercury Verado 150-HP outboard motor continuously makes oil, about one inch on the dipstick every 40 miles. It has about 200-hours. Anybody heard of this?
sosmerc posted 04-23-2010 07:53 PM ET (US)     Profile for sosmerc  Send Email to sosmerc     
The [problem] of four-cycle outboard motors making oil is well known. There can be numerous reasons for this. But I would first recommend, since you are most likely still under warranty, returning the VERADO to a qualified dealer and have them look at the run history to see if there are any obvious faults. For example, maybe the engine is running too cold due to a thermostat stuck open. The oil cooler also has a thermostat that could be malfunctioning. Perhaps the engine is running too rich due to a stuck open or improperly functioning injector. Perhaps the engine did not get properly broken in and thus the rings have too much blow-by. You might benefit from a shock treatment of QuicKleen in an effort to de-glaze the cylinder walls, followed by some "running like you stole it" to get the rings to seat. These are a few possibilities, but I am told there are other potential causes as well such as bad intake valve seals or valves themselves that are not seating. Find a competent dealer that doesn't act surprised when you describe your problem. You are not alone.
jimh posted 04-24-2010 11:07 AM ET (US)     Profile for jimh  Send Email to jimh     
I note that tmckay is from Manitoba, Canada. From that I make the inference that his Mercury VERADO is being run in lakes with rather cold water. The cold water may be contributing to the problem of the VERADO making oil.

The epicenter of use of the Mercury VERADO motor seems to be within about 25-miles of Ft. Lauderdale, Florida, where the water temperatures are tropical. Based on who participates in VERADO discussion here and on other websites, and it seems like the overwhelming majority of the users of the VERADO are from southern coastal areas. They're running in water with temperatures of 80-degrees. I suspect that there is not a great deal of experience available from those VERADO users with running the engine in really cold water.

glen e posted 04-24-2010 06:05 PM ET (US)     Profile for glen e  Send Email to glen e     
As Reagan once said "there you go again Jim"

ridiculous.....2500 members of veradoclub - 800 are Floridians...once again a hip shoot by the webmaster here. A large group are Canadian and midwesterners with no "making oil" problems...do a search yourself for proof.

jimh posted 04-24-2010 08:58 PM ET (US)     Profile for jimh  Send Email to jimh     
Glen--I have only read about three articles on VERADOCLUB.COM and I have no idea of the geographic distribution of your members. My impression of who owns a VERADO and where they live is based on participants of many websites, and my impression is as I mentioned above--a very high concentration in south Florida and in other warm-water coastal boating areas.

If I exclude boats owned by the government, Home Land Security, or boat dealers trying to sell them, here in Michigan I think I have seen two boats underway on the water with VERADO motors in the last five years. I did finally see one VERADO in northern Georgian Bay last summer--the first sighting up there.

I had no idea that the VERADO was in such widespread use on northern Canadian inland lakes. This comes as a surprise. I do a great deal of my boating in Canadian water, and, as I mentioned, VERADO sightings are actually less frequent than black bear sightings. Over the past five years or so I think it's been Verado--one sighted, black bears--two sighted.

In my on-line readings I have also seen mentioned many times that SUNDANCE MARINE in Ft. Lauderdale is the number one seller of Verado motors. This information fits well with my earlier assessment.

A major outboard boat builder whose boats can be fitted with several brands told me that if their boats are sold in southeast Florida, they tend to always be fitted with a Verado. Boats they sell elsewhere tend to have other brands installed.

These are some of the data that I have used to make my impression that the epicenter of Verado activity is around Ft. Lauderdale.

It is wonderful that Glen's VERADO.COM has so many members who run the boats on very cold northern Canadian inland lakes, but that fact does not really contradict my advice regarding the making oil problem, which, I will repeat:

"I note that tmckay is from Manitoba, Canada. From that I make the inference that his Mercury VERADO is being run in lakes with rather cold water. The cold water may be contributing to the problem of the VERADO making oil."

I think this is a very reasonable conclusion. The cooling systems of all outboard motors, even the fabulously advanced and sophisticated Mercury outboard motors, are open systems and take in large volumes of lake or sea water. When the temperature of the lake or sea water is very cold, the ability of the temperature regulating system in the outboard may be exceeded, and the operating temperature of the engine will be lower than normal--even on motors where the owner is a member of VERADO.CLUB. This occurs because in the open cooling system the temperature regulating valves, even if fully operating to increase cooling system temperature, may not have enough influence to overcome the influence of very cold lake or sea water being brought into the cooling system.

In any case, we know there is a strong correlation between a low engine operating temperature and making oil. It is completely reasonable to infer that operating in cold water will tend to cause a decrease in engine operating temperature. Therefore, it is completely reasonable to say that operating in cold water can contribute to making oil.

I also have to note that apparently Glen's reply is to say he has never heard of this. Glen has confirmed my premise: people who operate their VERADO in tropical water probably have not experienced problems that occur when a VERADO is operated in very cold water.

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