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Old 16-10-2016, 13:05   #16
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Re: Better use a light coat of WD40 than no fogging oil?

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Originally Posted by Franziska View Post
Hi engine specialists.

I've got two Yamaha 9.9 High Torque outboards onboard.
I'm amidst of winterizing, but have no fogging oil to spray in the cylinders.
Can I use a short spray of WD40 instead?
Or is it better to do nothing than that.
Alternatively I have a can of 4stroke oil here.

Trouble is I can not get proper fogging oil here and I'm not mobile enough to get to the next big city before leaving the boat.

I have run both engines for 20min with freshwater and have then disconnected the fuel lines and let them run dry with regards to fuel.
The fuel had a winterizing fuel additive in it.

Thanks for your thoughts,

Franziska

PS. I do know that fogging oil would be best, but it's simply not an option open to me.

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P[ease don't use WD 40. It will only strip lub. from your engine.
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Old 16-10-2016, 13:09   #17
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Re: Better use a light coat of WD40 than no fogging oil?

Thanks, but read my lips :-)

That's exactly what I said in my last posting.
I will NOT use WD40.

Just wonder if that gear oil is an option.

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Old 16-10-2016, 14:49   #18
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Re: Better use a light coat of WD40 than no fogging oil?

I don't expect anyone to believe me, but IMO fogging is extreme overkill for a 5-6 month storage on an engine that is pretty much soaked in oil for the rest of the year. I have never done, either with motorcycles or boats, with no ill effects. But go crazy if you think it helps.
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Old 16-10-2016, 15:13   #19
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Re: Better use a light coat of WD40 than no fogging oil?

What about say Olive Oil? Better than X, worse than Y? And if so, why? I've used it to good effect on non-stainless knives. Not the same application obviously, but it's done well by them.
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Old 16-10-2016, 16:46   #20
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Re: Better use a light coat of WD40 than no fogging oil?

WD 40 won't hurt, there are better alternatives, any kind 0f light machine oil, even motor oil or as has been suggested two stroke oil.
But for a few months you really don't need to do anything other than draining the carbs.
Get some Boeshield or corrosion-X to spray on the whole motor, years from now you will be glad you did.
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Old 16-10-2016, 17:27   #21
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Re: Better use a light coat of WD40 than no fogging oil?

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Originally Posted by sy_gilana View Post
Use a 25:1 ratio of 2 -stroke outboard oil (TCW3 standard) Best is Yamalube, if not Castrol. It contains everything you need. Run for 10 minutes in fresh water, then disconnect the fuel line, keep running while pulling choke on and off again just before the engine dies, at full throttle, use choke to limit revs, it will smoke like an old sailor, and eventually die.
Loosen carb drain screw (not all the way) and leave it so till you return. When tightening the carb drain screw be GENTLE!
This is the one to take advice from. I don't even drain the bowls though if you do a good job of keeping it running as long as you can playing the choke as it runs out of fuel. Done it this way for years. Draining the bowls would be a good idea though.
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Old 16-10-2016, 17:30   #22
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Re: Better use a light coat of WD40 than no fogging oil?

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Originally Posted by tinkrman69 View Post
If you can get it where your at use Marvel mystery oil. It will stay on the cylinder walls longer without evaporating longer than other petroleum oils. Other wise as mentioned any engine oil is better than WD40. todays small engines are made with s!@#t metal and will rust out in no time. Making sure the valves are closed is good but not an end all. use some kind of oil.
I disagree on the marvel, it was kinda debunked awhile ago. Lots of solvent's. I will say however, I don't believe this is the original formula....epa and all, ya know?
and it's alot of mineral oil.
https://www.google.com/search?rlz=1C...w=1600&bih=770
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Old 16-10-2016, 19:05   #23
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Re: Better use a light coat of WD40 than no fogging oil?

no to wd40. from your list 2 stroke oil but it may not be necessary in a modern outboard / sometimes the water pump impellers stick and damage themselves when the motor is started again / you have already flushed with freshwater
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Old 16-10-2016, 19:10   #24
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Re: Better use a light coat of WD40 than no fogging oil?

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Originally Posted by Sunsetrider View Post
I don't expect anyone to believe me, but IMO fogging is extreme overkill for a 5-6 month storage on an engine that is pretty much soaked in oil for the rest of the year. I have never done, either with motorcycles or boats, with no ill effects. But go crazy if you think it helps.
Quote:
Originally Posted by Cadence View Post
P[ease don't use WD 40. It will only strip lub. from your engine.
I don't fog anything. I just run the float bowl dry and pack it away. Putting a little oil in the cylinders can't hurt, but isn't necessary IMHO, especially just for a winter layup.
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Old 16-10-2016, 21:22   #25
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Re: Better use a light coat of WD40 than no fogging oil?

Franziska, read my post above. Those are Yamaha's instructions from the factory.

Oh, the reason for opening the carb drain after is that there will be condensation created by the cooling of the carb body, in the absence of fuel, these few drops of water will sit in the carb float bowl, till they evaporate, but will leave a deposit.

Incidentally the Ammonia added to TCW3 is to emulsify and transport small amounts of water through the system.

Outboards are designed to run cooler than motorcycles, that is why TCW3 burns at a lower temperature. Bike oil will not burn off completely in an outboard, and will result in carbon deposits on the piston skirt, and the head, and exhaust system. TCW3 in a bike will kill it over time.
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Old 16-10-2016, 21:48   #26
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Re: Better use a light coat of WD40 than no fogging oil?

Thanks. What is TCW3?

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Old 16-10-2016, 23:36   #27
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Re: Better use a light coat of WD40 than no fogging oil?

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Originally Posted by UNCIVILIZED View Post
What about say Olive Oil? Better than X, worse than Y? And if so, why? I've used it to good effect on non-stainless knives. Not the same application obviously, but it's done well by them.
Although this is a fuel and crude oil, pipeline study I think it indicate's olive oil would not be suitable. second only to coconut oil (both used in B100 biodiesel) in corrosiveness to steel. Lots of rust I think.
http://www.ijsrit.com/uploaded_all_f...7950718_r2.pdf
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Old 17-10-2016, 04:46   #28
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Re: Better use a light coat of WD40 than no fogging oil?

Need proof WD40 is a solvent and cleans away oil & grease?

I use it as a hand cleaner after working on an engine. Works better and faster than GoJo or the orange stuff. Literally blasts the grease off your hands!

Try it, you will be amazed..
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Old 17-10-2016, 05:01   #29
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Re: Better use a light coat of WD40 than no fogging oil?

Best handcleaner to me is butter (really!!) followed by lukewarm soap water.

No solvents needed.

Truely amazing.

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Old 17-10-2016, 05:27   #30
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Re: Better use a light coat of WD40 than no fogging oil?

Quote:
Originally Posted by Franziska View Post
What about Yamaha GL4 SAE90 gear oil?
Usually it goes in the lower leg.
Better than normal engine oil?

The ONLY options are those I have on board:

1)GL4 Outboard Gear Oil
2)2 Stroke Oil
3)4 Stoke Oil
4)WD40 (will definitely not use this)

Which is my best option?

Will put a spoon full in the spark plug holes then rotate the engine by hand with the prop.

Also drain carburetors.

Thanks again, I simply cannot get other oils than what's mentioned above until I leave her.

Engines are electric start.

Welcome to the Woods Mira 35 - Catamaran Lady Rovers Website!
So you're totally dismissing the warm cozy storage/bedroom nightstand idea???

With on board... I'd go in this order...

2 stroke - sticky and meant to burn off
4 stroke -
Gear -
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