Matt Lang wrote:
Ok
How much oil do you need for an oil change?
Matt
What's the difference? :-) I mean, are you collecting this information in
order to make a purchase decision? Or, what?
I have 200 HP 2 stroke and just want to feel better by knowing how
much oil a 4stroke uses 
Matt
Look here for a chart 2 stroke vs. 4 stroke
http://img56.exs.cx/img56/2093/oil.jpg
Had a look at the chart, what's the issue???
It confirms that the modern 2 strokes use less oil than the older ones,
but this is an allusion really when you take into account the extra
costs & while the dealers won't admit it you "should" clean the holding
tank every year. Once in there oil subject to heat & moisture
deteriorates into sludge with even the smallest amounts of water.
Again "all" the oil in a 2 stroke (by your graph the same or more than
a 4 stroke) still goes somewhere, either burnt or out the exhaust as raw
oil, I accept what you say about oily rags etc but we're talking the
entirety of the oil, not just sundry cleanup wipes.
There is another issue with the dfi 2 strokes & their oil, it's related
to raw oil injected into the crankcase, the oil builds up till excess is
"transferred", it either then gets burnt or goes straight through the
exhaust as raw oil. The system injects very small amounts at idle or
even low revs, however the oil is subject to considerable heat buildup,
unlike 4 strokes oil or even an old tech 2 stroke when it was diluted
with fuel & traveled through the engine relatively quickly. This is why
they've promoted special oils, because the oil can get hot enough to
bake behind the rings & it's all down hill from there.
Harry is a liar & has never actually owned a boat much less an optimax
engine. As for his old "hundreds of hours" lie, when he fabricated that
phantom boat in 98 he claimed here after a few mths use he had 200 hours
on it, it's just more evidence of a total lie.
K