2 stroke longevity - how many hours

[Auto Doc's]

Hi Doug Lee,

I find that a little hard to believe as well.

 

[GearHead36]

So . . . are you saying with an older (25 + years old ) chain saw, it's ok to run it with a 100:1
fuel mixture verses the 16:1 suggested by the manufacturer?
Thanks,
Doug Lee
*

Where are you getting 100:1? Most modern equipment recommend 50:1. For the old chainsaw mentioned, I'd probably go with 40:1. The oils today ARE better than what was available 25 yrs ago.

I'm with the "it depends on how it was cared for" crowd. If you use E0 and a high quality oil (I used Echo Red Armor, which has fuel stabilizer), the diaphragms will likely last for multiple decades. If you keep the air filter clean, the exhaust screen clear, it will work for decades. You might have to replace fuel lines every 10 yrs or so, but maybe not. I have 15 yr old equipment with the original fuel lines.

 

[Smithsonite]

I've run 100:1 in saws 40 years old. ONLY with Amsoil Saber, though. I wouldn't dare do it with much else ... aside from maybe one other brand whose name escapes me at the moment ...

 

[Tiger Small Engine]

I've run 100:1 in saws 40 years old. ONLY with Amsoil Saber, though. I wouldn't dare do it with much else ... aside from maybe one other brand whose name escapes me at the moment ...

Anyone that runs 100:1 in anything, old or new, is crazy. I read about it all the time online, and am not disputing that people do it. I am just saying as inexpensive as oil is, why?

 

[Douglas Lee]

Post #4 is talking about a 100:1 mixture!
Thanks,
Douglas Lee
*

 

[GearHead36]

Post #4 is talking about a 100:1 mixture!
Thanks,
Douglas Lee
*

Post #4 also mentions:

"If this were a really old plain bearing engine you'd need way more oil in the mix than 100:1 could provide."

 

[Smithsonite]

Anyone that runs 100:1 in anything, old or new, is crazy. I read about it all the time online, and am not disputing that people do it. I am just saying as inexpensive as oil is, why?

If it works, why not?

As I mentioned many posts ago, I've been running the same Echo SRM-210 trimmer on it since 2003, trimming 2.5 acres of land, and going through a minimum of 1 tank per use (sometimes 2).

I ran a small engine & auto repair shop for 14 years, and used it at 100:1 in all my customer's equipment. Never once have I seen a failure due to that ratio. In fact, I've been impressed by what I've seen inside on extremely abused equipment. There is almost zero carbon buildup, saving you from maintenance of cleaning ports, scraping pistons, and cooking mufflers clean, plus the oil has a fuel stabilizer. I ask, why WOULDN'T you use it at the recommended ratios (80 or 100:1).

Also many posts back, I mentioned I use it in my paramotor at 66:1.

Amsoil is as good as it gets when it comes to lubricants. And NO, it is NOT cheap. Quality rarely is.

But, everyone is free to do as they wish - it's their money.

 

[Douglas Lee]

Point taken!
Thanks,
Douglas Lee
*

 

[Auto Doc's]

I don't think too many folks are going to rush right out and order Amsoil for their modern throw away 2-stroke just so they can conduct a private study.

 

[dana a]

If it works, why not?

As I mentioned many posts ago, I've been running the same Echo SRM-210 trimmer on it since 2003, trimming 2.5 acres of land, and going through a minimum of 1 tank per use (sometimes 2).

I ran a small engine & auto repair shop for 14 years, and used it at 100:1 in all my customer's equipment. Never once have I seen a failure due to that ratio. In fact, I've been impressed by what I've seen inside on extremely abused equipment. There is almost zero carbon buildup, saving you from maintenance of cleaning ports, scraping pistons, and cooking mufflers clean, plus the oil has a fuel stabilizer. I ask, why WOULDN'T you use it at the recommended ratios (80 or 100:1).

Also many posts back, I mentioned I use it in my paramotor at 66:1.

Amsoil is as good as it gets when it comes to lubricants. And NO, it is NOT cheap. Quality rarely is.

But, everyone is free to do as they wish - it's their money.

I was curious about how you determine what ratio to use in various piece of equipment. You mentioned 100, 80 and 66 to one