2 stroke oil options

[Markus]

I posted the data sheets on Amsoil vs RP on another thread , Royal Purple is a better oil , higher flash, less friction , less heat more power, Synerlec . Amsoils smokes less at the dock.

You are spreading misinformation just like an Amway / Amsoil rep would do. Why would a higher flash point be better?

The minimum flash point in the TC-W3 specification is already too high. It was set to lower the fire insurance premiums for outboard dealers keeping oil in stock, not for what would be optimal for a 2-stroke outboard oil.

[Mark75H]

You are spreading misinformation just like an Amway / Amsoil rep would do. Why would a higher flash point be better?

The minimum flash point in the TC-W3 specification is already too high. It was set to lower the fire insurance premiums for outboard dealers keeping oil in stock, not for what would be optimal for a 2-stroke outboard oil.

Agreed.

Oil threads are always dangerous.

[wtsjr66]

I have been using Evinrude XD-100 oil in my 60 degree 150 Johnson on my flats boat mixing it with the gas at fifty to one for years, for whatever the reason it has an extremely clean idle with that oil. Klotz is what I have been using in my 260 for years with no problems.

[FMP]

Agreed.

Oil threads are always dangerous.

Well then someone should check the Alisyn, I think I remember it being even higher but I could be wrong. Markus, what do you feel is optimum for a 2 smoke??? Maybe you should call the folks at RP or Alisyn and tell them. I was just checking some old notes, Alisyn uses PAO derived from benzine so the flash point should be in the range of 500-600F, they use no solvents in the oil. Great cold weather properties as well.
http://www.screamandfly.com/content....Long-Term-Test

[Mark75H]

When I look up PAO, I get: "PAOs are made by polymerizing an alpha-olefin molecule like ethylene", not that they are derived from benzine. No idea about the flash point or relevance here there or anywhere.


Can anyone explain this to me?

Remember that Pro Power 21 is a full synthetic base, so conventional wisdom regarding the 32:1 “high performance ratio” does not necessarily apply here.

[leaky]

Since this thread is still going - 800 hours on a set of Opti 150's so far w/ Penzoil XLF, seems to be doing it's job and < $20/gallon at wally world.

[lbhsbz]

I'll throw in my recommendation for Pennzoil premium plus. This motor was scuffed/hurt 5 years ago, but it's all I had so I ran it. Bone stock 1986 200hp 2.4. Last season it turned a 26P chopper to 7100rpms at 80mph (79.8 GPS) on a 19' boat...The cylinders don't look any worse than they have for last 3 years, but compression on 3 cylinders was down under 70 and the ring tips broke on #6, so I decided to tear it apart. There is no reason why this thing shouldn't have stuck on at least one hole, but it ran great. I would have ran it though another season, or maybe more...only reason I yanked the heads is to take a look at the walls. Here's the pistons that came out of it....keep in mind, it ran great







I'll continue to use the stuff.

[FMP]

When I look up PAO, I get: "PAOs are made by polymerizing an alpha-olefin molecule like ethylene", not that they are derived from benzine. No idea about the flash point or relevance here there or anywhere.


Can anyone explain this to me?

Olefins can be classed as closed ring cyclics such as benzine. So they crack the ring to achieve the geometry and length needed. I was told by Alisyn that they derive from benzine. Just talked with them again , 1- decene derived ,10 carbon chain not benzine. The email must have come in spellchecked or something .They also source the PAO . In some engines a higher flash could benifit wrist pin and cyl wall/ ring at high heat areas/ports so once mixed with gasoline the higher value might be the choice if all other load test numbers are equal .
http://www.britannica.com/science/olefin

[Mark75H]

Remember that Pro Power 21 is a full synthetic base, so conventional wisdom regarding the 32:1 “high performance ratio” does not necessarily apply here.

Still don't know that this means ... seems out of context

Olefins can be classed as closed ring cyclics such as benzine.

No; more than a little bit WRONG. I'm not a chemist by trade, but I know enough organic chemistry to know that olefin/alkene is not synonymous with aromatic/cyclic like benzine. Olefins can be way too short to form a ring; aromatics/cyclics/benzine family chemicals are 6 cornered ring chemicals. Look at the last sentence of the first paragraph of this link:

https://en.wikipedia.org/wiki/Alkene

[FMP]

Your going to make me get out my old notes and texts from organics and read , yes cyclic benzine shouldn't be in that grouping , I was considering the resonance forms and positions of the double bonded c at any given time. Alternating double and single bonds instead of the aromatic pi cloud of benzene. it's been a while. However do you know what lenght chain PAO is used ? This is going bother me until remember all this great stuf and talk with guy at Alisyn who is now on vacation.
32:1 is what they believe non synthetics were being used at for " performance use" . So 40:1 provides the protection and performance???

[powerabout]

How many of these oils are bio degradable?
Its not part of the bia tcw spec but should be.

[olboatman]

How many of these oils are bio degradable?
Its not part of the bia tcw spec but should be.

Completely! (not a tree hugger...just common since) Gary

[FMP]

Completely! (not a tree hugger...just common since) Gary

http://syntheticlubricants.aerospace...?&bc=100|1003#
Go hug a tree, it's free and no complaints.

[powerabout]

Completely! (not a tree hugger...just common since) Gary

castrol biolube

[FMP]

I used the bottom half of a year old quart of Merc Premium . Poured it in a 6 gallon jug and as the last came out noticed it was lumpy and not right. Waisted the fuel, and wonder why it the oil "turned" . Closed container, on shelf from last year, never had that happen before. Solvents in the oil can pass through and reduce the volume of the contents in the container creating a displacement that could pull in moisture under the cap although not likely, but this was odd.