2 cycle outboard oil flash-point ?

[pecheux]

Good day,

Question: (you know me .. lol) Would some of you on this board know what brand of 2 cycle outboard oil would have the lowest "flash point" ??

And would a lower "flash point" oil remain in the OB piston and cylinders for a shorter period of time ? (burn better) in comparison to an OB oil that would have a higher "flash-point" ??

No matter if it is synthetic or petroleum based OB oil ...

Regards,

 

[ondarvr]

Re: 2 cycle outboard oil flash-point ?

You need another project to keep your mind busy.


Does it really matter?

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

You need another project to keep your mind busy.


Does it really matter?

I was born busy .. and I still like to know how things work after all these years ...

The result matters to me ... I hope you dont mind.

Regards,

 

[ondarvr]

Re: 2 cycle outboard oil flash-point ?

I was just kidding.

I did read some info on how long oil stays in the engine related to RPM's and such, but nothing on flash point.

This type of question may need a little more informed person from within the oil industry, any body seen THE OIL DOC recently?

 

[Silvertip]

Re: 2 cycle outboard oil flash-point ?

It doesn't matter what the flash point is. It won't ignite until spark occurs. At that point all the lubrication in the fuel mix has done its job and the next step is to get rid of the residue. On the downstroke the fresh charge in the crankcase is being compressed and ready to flood the cylinder thus forcing out the byproducts of combustion. The small amount of oil in each fuel charge is pretty well consumed in the big bang. It's the byproducts of combustion that are the issue. Although I'm not an oil guru, I suspect all two stroke oils flash within a few degrees of each other. Since combustion temperatures are way higher than the oil flash point, the oil will have the same flash point as the fuel. But since you asked, go to the Amzoil web site and check the different categories of two stroke oils. The descriptions include flash points and they are within 20 degrees of each other.

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

It doesn't matter what the flash point is. It won't ignite until spark occurs. At that point all the lubrication in the fuel mix has done its job and the next step is to get rid of the residue. On the downstroke the fresh charge in the crankcase is being compressed and ready to flood the cylinder thus forcing out the byproducts of combustion. The small amount of oil in each fuel charge is pretty well consumed in the big bang. It's the byproducts of combustion that are the issue. Although I'm not an oil guru, I suspect all two stroke oils flash within a few degrees of each other. Since combustion temperatures are way higher than the oil flash point, the oil will have the same flash point as the fuel. But since you asked, go to the Amzoil web site and check the different categories of two stroke oils. The descriptions include flash points and they are within 20 degrees of each other.

That basicaly answers my question since you mention oil residues and gas is ejected at every ingnition sparks... I was under the impression that some oil would remain in the cylinder after the ignition ... therefore I was associating that on a "smoky" OB like my Force using a lower flash point oil would have increase the chance that oil does not accumulate in the cylinder with every strokes.

Actualy I am familiar with Amsoil but this question was more inclined towards petroleum base oils. I would think synthetic being "tuffer' would be harder to burn.

Thank you,

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

I was just kidding.

I did read some info on how long oil stays in the engine related to RPM's and such, but nothing on flash point.

This type of question may need a little more informed person from within the oil industry, any body seen THE OIL DOC recently?

No harm done ... lol Admitedly I am overly curious ... lol

 

[kenmyfam]

Re: 2 cycle outboard oil flash-point ?

All I know is that I like the smell of 2 stroke motors starting up in the morning.

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

All I know is that I like the smell of 2 stroke motors starting up in the morning.

I just set up a Johnson 6 hp kit on my son's alu ... mixed it with castrol super outboard petroleum base 2 cycle oil ... and enjoyed the smell on the test run on the lake ... LOL

Have to agreee with you ... miss that with the synth oils .

 

[Gary H NC]

Re: 2 cycle outboard oil flash-point ?

I know the synthetic 2 stroke oil smokes much less than regular oil and the spark plugs have less carbon on them..
So you would think it has cleaner burn...

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

I know the synthetic 2 stroke oil smokes much less than regular oil and the spark plugs have less carbon on them..
So you would think it has cleaner burn...

Sounds right ... tx

 

[kenmyfam]

Re: 2 cycle outboard oil flash-point ?

Sounds right ... tx

But that smell !!!!!

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

But that smell !!!!!

You'r going to have me go back to petroleum base oils ... LOL

 

[CATransplant]

Re: 2 cycle outboard oil flash-point ?

All I know is that I like the smell of 2 stroke motors starting up in the morning.

I'm really old, so I remember running my little 50cc roadracing motorcycle with the old original Castrol, which was made from castor oil. Now, there's a smell to bring on the nostalgia. I haven't smelled that for years and years.

 

[pecheux]

Re: 2 cycle outboard oil flash-point ?

I'm really old, so I remember running my little 50cc roadracing motorcycle with the old original Castrol, which was made from castor oil. Now, there's a smell to bring on the nostalgia. I haven't smelled that for years and years.

I know what you are saying ... I was fortunate enough to have the privilege of that castor oil smell when I belonged to a sports car club and we were going at the Formula Junior races. They would use that castor oil either in the crankcase or in the gas tank of those cars ... and since we were allowed in the pits we could stand by those cars all day enjoying the sound and the smell ... LOL

PS: hey you dont look that old ... or is it me in the same age group ?? LOL