Skip,
I think we both speak English. I recommended up front to follow the manufacturer's recommendation, they built the motor. However,
lube oil mixed with gasoline will lower the auto ignition point of the fuel and it is a contributing risk factor for detonation.
You obviously don't believe me, so I invited you to do the research yourself.....you didn't. Instead, you quoted a user manual and
you are still talking trash from a point of no knowledge. What is wrong with this picture?
Steve

"Flying Pig" wrote in message ...
From Page 8 of the OMC manual for the 15HP, a 1992j model:

To protect your new outboard motor during the intiial hours of operation, and to seat internal engine components, you MUST
(emphasis theirs) add extra oil during the break-in period.

The fuel/oil ratio for the first 12 gallons must be *25-1* (emphasis theirs).

The fuel oil ratio during normal operation, after break-in, must be *50-1* (emphasis theirs).


My 6HP manual in hand is just before they went to 100-1 oil. Note that this, a 2005 manual, as the dealer didn't have a current
one, is for the normally 50-1 mix engine. My 6 is actually a couple of years later, and the recommended use is for half of that
shown above. As mine was a trade-in, it didn't happen to have its original manual, explaining why I'm looking at an older one.

It says, on page 15:

The fuel/oil ratio for the first 10 hours must be *25-1* (emphasis theirs).

The fuel oil ratio during normal operation, after break-in, must be *50-1* (emphasis theirs).

HOWEVER...

"During high performance opertion you must use a *25-1* fuel/oil ratio in your fuel tank."

Now, I agree, OMC is a poor source of information about what to use in their engines for them to warranty them.

But until some more authoratative source presents, I'm going with the manual.l NOTHING in it suggests, and, quite the contrary,
demands its use, for high performance, that doubling the oil is harmful to the engine.

Indeed, high performance seems to me to be more stressful, and, as such, if the assertions that too much oil will melt the
aluminum, that the recommendation would be for LESS oil, not doubling it...

L8R

Skip

--
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