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

[MustangMike]

A question to Randy & Brad ... I know you are both devout 32:1 fans, and I understand why. I get that 50:1 is minimal protection, likely not enough for most ported engines.

Have you guys seen many oil related failures from people running 40:1? Thanks.

 

[blsnelling]

I'm not in a position to answer that. I don't take in rebuild work and only see saws already in good running order.

 

[Sagetown]

ok oil geeks! Chew on this.... I better get some serious amount of likes outta this one! heh

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Redbull says -


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continued...

Redbull; just want to congratulate you for that survey. Your conversation with Belray was interesting and informative.
Thank you for sharing this with us.

 

[Marshy]

That would ONLY measure performance. IMHO, that's less than 1/2 the equation.

I agree, the other half of the equation is reliability. That means lots and lots of hours of running the machine at a riven ratio. Not something that is easilly measured. But the questions are, what the best performance, what the best reliability, and as an end user which level of compromise are you willing to tolerate?

 

[blsnelling]

That is where destruction testing and/or lots of tear downs would be required to evaluate the protection given.

 

[Marshy]

Fast, cheap, reliable, pick 2.

 

[blsnelling]

Look at the oils run in drag cars engines. They most always run much heavier oil. 20W-50, SAE30, SAE 50, etc... I'm sure it costs some HP, but it's required to protect the engine from self destruction.

 

[Marshy]

Different addatives too like high zinc content.

 

[bwalker]

Yesh, too lean and lots of blow by.

I don't believe what you are seeing on the skirts was blow by. The rings were in good shape and the bore was not out of round. The marks also correspond with the exhaust ports and transfer ports.
Just deposits related to heat.
Just for reference with the same exact cylinder and same brand piston I have double the hours on it with 2R at 32:1 and everything below the crown is bare metal.

 

[bwalker]

On a dyno is where I would start.

Yes, although you could just save yourself some time as others have done it and the results are the opposite of this test.

 

[porsche965]

I wonder if there is an increased health concern with carcinogens breathing heavy amounts of oil?

Is H1R's esters a chemical or naturally derived product?

There was a midget at a Stihl Dealership that was a friend of mine. He was really knowledgeable and enjoyed his job. He knew every spec of every saw Stihl ever made. SawTroll reminds me of him lol.

Anyway Robert developed throat Cancer before 50 and died. Some thought being around a high volume dealer with lots of engines running throughout the day and his location relative to the ground and fumes contributed to his demise.

I realize that midgets usually don't live too long and this is a quirky story in an oil thread but sometimes the easiest answers we search for are right in front of us. He worked through his treatments until he passed. He was very well liked. I think of him when I'm Goonie Busting bent down low behind a 50" log at the end of a long cut on a windless day....

 

[bwalker]

I wonder if there is an increased health concern with carcinogens breathing heavy amounts of oil?

Is H1R's esters a chemical or naturally derived product?

There was a midget at a Stihl Dealership that was a friend of mine. He was really knowledgeable and enjoyed his job. He knew every spec of every saw Stihl ever made. SawTroll reminds me of him lol.

Anyway Robert developed throat Cancer before 50 and died. Some thought being around a high volume dealer with lots of engines running throughout the day and his location relative to the ground and fumes contributed to his demise.

I realize that midgets usually don't live too long and this is a quirky story in an oil thread but sometimes the easiest answers we search for are right in front of us. He worked through his treatments until he passed. He was very well liked. I think of him when I'm Goonie Busting bent down low behind a 50" log at the end of a long cut on a windless day....

H1R uses an ester base, so it's a petro chemical.
However, inhaling the gasoline fumes would be more detrimental I would think. Which is why the newer lower emissions saws are not such a bad thing.

 

[KG441c]

H1R uses an ester base, so it's a petro chemical.
However, inhaling the gasoline fumes would be more detrimental I would think. Which is why the newer lower emissions saws are not such a bad thing.

All these mixes we r using are classified as Carcinogens. BWalker do you think these oils burn differently in dirtbikes compared to ported saws?

 

[KG441c]

I have not seen the discoloration of that magnitude on my piston tops using H1R or Motul 800t. Amsoil Saber? Yes I have after the 1st tank of fuel the piston top was soot blackened

 

[bwalker]

All these mixes we r using are classified as Carcinogens. BWalker do you think these oils burn differently in dirtbikes compared to ported saws?

I won't say that none are but I have looked at most of the popular oil brands MSDS sheets and I have never seen one that was a a carcinogen.
No, I think the oils function the same way in a bike as the do in a saw.

 

[KG441c]

I won't say that none are but I have looked at most of the popular oil brands MSDS sheets and I have never seen one that was a a carcinogen.
No, I think the oils function the same way in a bike as the do in a saw.

I disagree on both statements

 

[bwalker]

I have not seen the discoloration of that magnitude on my piston tops using H1R or Motul 800t. Amsoil Saber? Yes I have after the 1st tank of fuel the piston top was soot blackened

Its normal for a piston top to be black. At least for a motor that's got any run time on it. What you don't want to see is any mettalic deposits who h present as crusty, raised deposits either right under the sparkplug or near the exhaust side.

 

[bwalker]

I disagree on both statements

Your right to be wrong. Take a peak at the MSDS sheets and get back with me..

 

[KG441c]

http://www.arboristsite.com/communi...9/?temp_hash=74deb1e8ddc74206db450c489e82c932

 

[bwalker]

Notice it says " this product is not carcinogenic"?