661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[bwalker]

Unrelated question..
I bought a freshly rebuilt mariner fuel injected 175. It is oil injected and is still in it's break in period.. Why do they suggest to run pre mix oil in the tank for break in? Is there not a risk of running too lean doing this? I am not a boat guy.. It smokes a lot after a proper warm up though, eventually cleaning out after 1/2 -3/4 throttle run to the preferred fishing area.
Thoughts?

Because the OEM'S are concerned that the pump may have air in the lines when first started. I would run alittle pre mix in any injected motor when ever new or after work on the injection pump/ lines.
Extra oil for break in is counterproductive IMO.

 

[Hedgerow]

I knew there was more to that story..

 

[Hedgerow]

Would 100:1 pre mix be sufficient for protection through this period?
Surely it would fog less skeeters..

 

[blsnelling]

A question in my head. 2 saws ran at 100:1 to failure. R2 and 800t. Which do u think would go first?

The one with the highest viscosity...800 2T.

 

[one.man.band]

PIB is a term that refers to a variety of products, as do esters.
PIB is not what makes Styrofoam cups as that's poly styrene.
PIB is an excellant lubricant when the right types and viscosity product is used.
Yamalube has two cycle lubes figured out and uses PIB.

yamaha folks were talking about low and high molecular weight polybutene.
low molecular : https://en.wikipedia.org/wiki/Polybutene
the high molecular weight version polybutene-1 is used in polystyrene (styrofoam): https://en.wikipedia.org/wiki/Polybutylene

edit: spelling. what happened to this site?

 

[bwalker]

The one with the highest viscosity...800 2T.

Brad, you can't say that with any certainty....
Although based in its extremely high metal content and its viscosity 800 might go a little longer. Of course the opposite could be true as well.

 

[one.man.band]

over it.

have fun over here.

 

[Ron660]

A question in my head. 2 saws ran at 100:1 to failure. R2 and 800t. Which do u think would go first?

KL-200 will last longer??

 

[bwalker]

yamaha folks were talking about low and high molecular weight polybutene.
low molecular : https://en.wikipedia.org/wiki/Polybutene
the high molecular weight version polybutene-1 is used in polystyrene (styrofoam): https://en.wikipedia.org/wiki/Polybutylene

edit: spelling. what happened to this site?



View attachment 427911

PIB might be used to make styrofoam and it may not. PIB isn't styrofoam.

Also might point out these negative effects are associated with high levels of PIB and high molecular weight PIB. At the levels found in the two cycle oils I have looked at it simply isn't an issue. And Yamaha itself uses PIB with all of their two cycle oils I have looked at.

 

[bwalker]

KL-200 will last longer??

Castor oil will beat all of them.
How this relevant to anything?

 

[Ron660]

Castor oil will beat all of them.
How this relevant to anything?

KL-200 is castor or synthetic? I only remember reading KL-200 had an extremely high viscosity.

 

[one.man.band]

read up on the health effects folks. stay safe.

when i first was involved with abrasive blasting of lead paint 25 years ago. the only safety warning required at the time on the collected slag placed in 55 gallon sealed drums was.... "do not eat."

times change.

 

[bwalker]

KL-200 is castor or synthetic? I only remember reading KL-200 had an extremely high viscosity.

I believe it's their older synthetic.
Viscosity isn't the only thing going on when it pertains to the question at hand.
Castor for instance polymerizes under heat to form a grease like substance, so it has a a film strength that's off the charts.

 

[KG441c]

KL-200 will last longer??

All this stuff has gotten out of hand. I wouldnt believe any oils claim until Ive seen 2 oils compared side by side in equipment to failure. Anything else is an opinion and a waste of time

 

[KG441c]

KL-200 is castor or synthetic? I only remember reading KL-200 had an extremely high viscosity.

Alota the hotsaw guys use kl200. Gotta be a reason

 

[cuttinties]

Alota the hotsaw guys use kl200. Gotta be a reason

Methanol and Nitromethane. Completely different ballgame.

 

[KenJax Tree]

All this stuff has gotten out of hand. I wouldnt believe any oils claim until Ive seen 2 oils compared side by side in equipment to failure. Anything else is an opinion and a waste of time

Even compared side to side in one scenario they're gonna be different in another so too many variables to just say one oil is the best.

 

[bwalker]

Even compared side to side in one scenario they're gonna be different in another so too many variables to just say one oil is the best.

Stats being what they are 1 on 1 doesn't mean squat. And there is a reason tests like this have never been done. They don't mean squat or tell you anything about how a oil at a normal ratio performs over the life of a saw.

 

[windthrown]

yamaha folks were talking about low and high molecular weight polybutene.
low molecular : https://en.wikipedia.org/wiki/Polybutene
the high molecular weight version polybutene-1 is used in polystyrene (styrofoam): https://en.wikipedia.org/wiki/Polybutylene

edit: spelling. what happened to this site?



View attachment 427911

Bah! Technical papers do not mean anything! They are written by marketing and advertising people and are just hype! No, I do not actually believe this, but many so called "experts" on this site do.

As for this site, it has gone to shyte in many ways from Sunday.

 

[windthrown]

read up on the health effects folks. stay safe.

when i first was involved with abrasive blasting of lead paint 25 years ago. the only safety warning required at the time on the collected slag placed in 55 gallon sealed drums was.... "do not eat."

times change.

But lead tastes and smells so good! It must be good for you!