Matt Lang wrote:
"K. Smith" wrote in message ...

Matt Lang wrote:

Guys,

I am trying to find out how much more (or less) oil a 2 stroke uses
compared to a 4 stroke.

Thus, I need to know about your 4 stroke motor (inboard or outboard):

- Horsepower, brand

80/na


- amount of oil it takes for an oil change (incl filter)

6 ltrs (9-10 pints)


- how often do you change your oil (how many hours)

50 hrs (oops sometimes a "little" longer:-)) At lease every 6 mths in
time regardless of hours & always new filter(s)


- how often does the manufacturer recommend you change the oil?

NA


- Does your motor burn or lose oil? Do you have to top up in between
oil changes?

no/no


Thanks for your help!

welcome:-)

K

Matt




Thanks to you guys for the data! Keep 'em coming!

I think its safe to say that if you do run your motor only few hours a
year, like 10-20, a 2 stroke may actually consume less oil. It will
change the more you run it ... Still more data needs to be collected.

A 4 stroke that burns oil, and I was told for cars 1l per 1000 km is
considered no defect (by the manufacturer of course! The owner sees it
differently) will use quiet a bit of oil.

Matt

Save you do huge hours per season I doubt a 4 stroke would "use" less
oil than one of the new epa compliant 2 strokes but you might also consider;

(i) The 4 stroke doesn't put oil out into the air or the water, it gets
"changed". Hopefully the used oil gets disposed of correctly, here
that's mostly take it to a garage for their recycle tanks.

(ii) You should at least once a season clean out the oil reservoir on
the 2 strokes (new or old type), the oil in a vented tank absorbs
moisture which creates a sludge in the bottom of the tank.

(iii) The "new" 2 strokes use or at least recommend special dealer only
oils; can be expensive.

K

"K. Smith" wrote in message ...
Matt Lang wrote:

Save you do huge hours per season I doubt a 4 stroke would "use" less
oil than one of the new epa compliant 2 strokes but you might also consider;

I will create some charts and post ... Besides the ETEC they all use
lots of oil . My optimax runs at 50:1 - 60:1


(i) The 4 stroke doesn't put oil out into the air or the water, it gets
"changed". Hopefully the used oil gets disposed of correctly, here
that's mostly take it to a garage for their recycle tanks.

Yes true ... this time however cost is the only objective

I am unsure which is worse: 2 stroke oil burnt or 4 stroke oil in the
landfills in form of oily rags and filters which most people dont
dispose properly (assuming they recycle the actual oil)


(ii) You should at least once a season clean out the oil reservoir on
the 2 strokes (new or old type), the oil in a vented tank absorbs
moisture which creates a sludge in the bottom of the tank.

Yikes! I didnt know that ... how is that done? flush it with oil?


(iii) The "new" 2 strokes use or at least recommend special dealer only
oils; can be expensive.

They ARE very expensive. Although you can run an optimax on the
(relatively) cheap oil it is STRONGLY not recommended ....

Thanks for your good input!

Matt