What oil is best? and what ratio?

[junkman]

Did you shut the saw off right after use or let it idle? I remember the oil thread on AS experienced members said if you let your saw idle several minutes after use the plug will be wet and not give you a representative picture. I usually always let my saw idle several minutes after use to cool down. Plus I like hearing my Mastermind 660 idle. My Mastermind 372 sounds even better like my CR-80 when I was a kid.

i shut it off before that image that is why it looks dry ,if it idles the plug would be wet looking .this was 32 to 1 ,with the saber i felt a little more power over the 40 to 1 ,some oils i get reversed results .could have been because the 32 to 1 leaned it out more ,the rpms went up also with 32 to 1 ,i had to richen some to bring it back down .

Is Saber or Dumonde your favorite so far?

The dumonde is a superior oil in my opinion ,but it is gold so hard to see in the can it is mixed ,and expensive ,i think the 8 oz bottles of saber are about 4 bucks ,or about half the price of dumonde ,the saber once i got it tuned right has real zippy limbing response and sounds better than most dirtbike oils i have tried wide open with the bar buried ,it does leave a sooty exhaust can though ,and you can see some buildup on the plug ,the dumonde leaves a cleaner plug with almost no buildup ,and the muffler can has less soot ,,the dumonde has very little exhaust odor also ,the saber is not too bad for smell though .

 

[Keith Gandy]

Lucas is another oil I have ran a good bit with good results. Matter of fact only 2 oils Ive ran that I wouldnt want to run again is Ultra and R50 just because of the smell

 

[Keith Gandy]

Im intetested to run alil of the dumonde in my 550xp at 40to1 and see how it likes it

 

[jmssaws]

I'm only gonna run benol at 50:1 and I'm switching from 93 to 89 octane vp.

There's a noticeable difference in power from 93 to 89.

 

[junkman]

Im intetested to run alil of the dumonde in my 550xp at 40to1 and see how it likes it

Should be there monday Keith . You will have to run that oil a little richer tune than every other brand to tune right

 

[junkman]

That's impressive. 32:1 huh?



.

Let me know what you think of it at 32 to 1 vs other brands when you get to try it out .

 

[Mastermind]

I've got a metric chit ton of oils right now. lol

 

[Keith Gandy]

I'm only gonna run benol at 50:1 and I'm switching from 93 to 89 octane vp.

There's a noticeable difference in power from 93 to 89.

Theres another hurdle! Persuade folks that 87 octane will produce more energy!! Im lucky that I pass the station on my way to work that has 87 efree

 

[Keith Gandy]

All the stations locally that had 87, 91, and 93 e free has phased out all but the 87 e free

 

[Mastermind]

Keith, you remember seeing me beat my head against the wall trying to tell folks different things?

Fabulous fights have been fought over this stuff.

Well, not from me anymore. I just don't really care what folks think these days.

 

[Keith Gandy]

Keith, you remember seeing me beat my head against the wall trying to tell folks different things?

Fabulous fights have been fought over this stuff.

Well, not from me anymore. I just don't really care what folks think these days.

One thing about it though Randy is folks in the know of the stroke and combustion process and how it works in this equipment respect You, Mike, Jason, Scott and listen and appreciate the input . Ive listened and theres a reason i run 87 octane. Several others I gained respect for here r Al, Stihlbro, Kevin(Mopar), drf255 , Deets, and Redbull for a wealth of info as well as others that when they offer information I pay attention

 

[Mastermind]

I'm not saying I'm gonna stop sharing what works for me. I am just not about to go out of my way to prove a point.

I've seen how that ends up......

 

[CR500]

View attachment 14785 rings are working

what ratio???? I'm liking what I see on that skirt,

It does not have the typical Super tech look that some of us are seeing on here.


In other news my qt of Original tech came in. I plan running that in the 7900

Torco is being ran the the 661 which I also need to get ported.

The 441 will receive some Mobil 1

The 044 or IPone


That is the plan..... it will change probably lol

 

[Ron660]

Theres another hurdle! Persuade folks that 87 octane will produce more energy!! Im lucky that I pass the station on my way to work that has 87 efree

You already tested 93 vs 87 in a ported 362 mtronic saw. 93 won. Several more tests were probably needed to verify your results.

 

[Keith Gandy]

You already tested 93 vs 87 in a ported 362 mtronic saw. 93 won. Several more tests were probably needed to verify your results.

By what a fraction of seconds? Know how many variables r involved in testing like that? Do u remember Chad comparing the octanes on his dyno? The low octane over the whole chart averaged more. So now my opinion and test r of more merit?? Lol!!! Low octane produces more energy in short 2 strokes and its that simple.

 

[Ron660]

By what a fraction of seconds? Know how many variables r involved in testing like that? Do u remember Chad comparing the octanes on his dyno? The low octane over the whole chart averaged more. So now my opinion and test r of more merit?? Lol!!! Low octane produces more energy in short 2 strokes and its that simple.

It was your test not mine. But 93 was faster. I thought you did a good job testing. I think a mtronic saw would be the best for testing, octanes or timed cuts, since tuning can't be argued.

 

[Keith Gandy]

This is my reasoning. The short stroke in these chainsaws already have a hard enough time burning the oil off like it needs to produce the most energy in the short time it has to do so. Lower octane ignites quicker which gives the charge coming in more time to try and achieve complete combustion and also why we advance the timing to give the combustion if u will a head start. Higher octane does just the opposite. An oil that resists burning off works against what the combustion process is trying to achieve to start with. If the topend is soaking wet with unburn oil that is like pouring water on a fire and working against the combustion process. The bottomend, piston skirts, cylinder walls , rings should be wet and not the top of the piston, combustion chamber , and exhaust port/muffler. All thoso should be dry and alil carbon is a sign that the combustion process has done what its suppose to. Thats my view anyway

 

[jmssaws]

what ratio???? I'm liking what I see on that skirt,

It does not have the typical Super tech look that some of us are seeing


In other news my qt of Original tech came in. I plan running that in the 7900

Torco is being ran the the 661 which I also need to get ported.

The 441 will receive some Mobil 1

The 044 or IPone


That is the plan..... it will change probably lol

Klotz benol at 50:1

 

[jake wells]

how much cleaner would klotz r50 run if mixed at 50:1 or any klotz for that matter.

 

[CR500]

This is my reasoning. The short stroke in these chainsaws already have a hard enough time burning the oil off like it needs to produce the most energy. Lower octane ignites quicker which gives the charge coming in more time to try and achieve complete combustion. Higher octane does just the opposite. An oil that resists burning off amplifies what the combustion process is trying to achieve to start with. If the topend is soaking wet with unburn oil that is like pouring water on a fire and working against the combustion process. The bottomend, piston skirts, cylinder walls , rings should be wet and not the top of the piston, combustion chamber , and exhaust port/muffler. All thoso should be dry and alil carbon is a sign that the combustion process has done what its suppose to. Thats my view anyway

I'm not afraid of normal carbon build up. It is normal as it gets in a 2 stroke. The whole rpm thing about the Kl 200 had me a little worried but Redbulls' email and more thinking about a 2 stroke saw vs a 2 stroke bike just amplifies that even though they share the same mechanics they are still drastically different. I mean even at a high rpm in wood the fuel/oil is replaced in a smaller cylinder that maybe??? IDK my head hurts and the only way we will find these answers out is to test more saws and oils out.

What may work in the 7900 may be to much for a ported 441