Outboard motor oil

[claymore]

Sorry if this has been done to death, can I use Stihl chainsaw oil in my Yamaha Malta outboard or should I get "Marine" outboard oil?

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Claymore
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[BarryH]

Use the marine stuff. Its designed to burn at a lower temp. The other stuff for bikes and chainsaws burns at a higher temp. Mainly due to them being aircooled and they run hotter.

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[claymore]

Thanks for that.

<hr width=100% size=1>regards
Claymore
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[andyball]

not disagreeing, ....but there's a great many watercooled bikes about these days (ok, freshwater cooled, hence higher temps).

Wd think that any two-stroke oil suitable for being pumped by m/c two-stroke oil pumps is thin enough at low temps
( still over 50C coolant temp?) to work in an outboard....or is it sposed to be that the combustion temperature is lower, so "special" oil needed not to make smoke/carbon deposits when burnt?.

Anything on the subject that's not direct from the oil makers?.

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[BarryH]

Basically, yup. Used to use the 2 stoke that I used in the RD and YZ in a Mercury 115. It used to oil up quiet badly unless you were screaming the nuts off of it. Used to smell lovely running on the castol R though. On the flip side I had an RM250 that was water cooled and never seemed to oil up. Think it had something to do with the auto lube system. Mind you, that was always being thrashed!

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[iangrant]

You probably, like me, know the answer - yes of course you should run it on the marine oil.

However, like me, you will probably run it on any old 2 stroke oil you can get your hands on, I did in my Suzuki 2.2 for 5 years with no problems.

Bought a 4 stroke honda now - heavy but a joy.. no more bloody mixing -

Biggest trouble I had was remembering wether I had put the oil stuff in the petrol can the next time I came to fill up the outboard??


Ian

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[graham]

Tie a bit of string round the handle as a reminder.Trouble is several days later you wont remember if the string means mixed or unmixed.

I usually put another dose of oil in if Im not sure appart from a bit of smloke no harm done.

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[claymore]

I've always adopted the rules of a sailing school I used to work at - not on the boat if not mixed.

<hr width=100% size=1>regards
Claymore
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[longjohnsilver]

Re:G & Ts

Does the same apply to these?

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[claymore]

Re:G & Ts

Slight difference there as I've never found the G to do too much damage if I forget to mix it first.

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Claymore
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[andy01842]

More oil = less petrol = a weak mixture. A weak mixture makes a engine over heat and seize. If you thrash it hard the spark plug will melt and make a hole in the piston. The metal that was the crown of the pison will get into the main and big end bearings. Throw it!

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[Heckler]

Re:G & Ts

i thought you lot drank scotch with lemonade?
stu

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