Maruyama Mixture Mahem

[Tom_T]

In the US an oil mix of 50:1 is specified, below the equator things suddenly change to 25:1. You can check it out here
http://www.maruyama-us.com/uploadedFiles...s/BL3100%20.pdf
and here
http://www.poweruplawncare.com.au/maruyama/manuals/bl3100.pdf

Then there's Tanaka's instructions on the issue:
Fuel
• Always use branded 89 octane unleaded gasoline.
• Use Tanaka two-cycle oil or a quality two-cycle oil at mixing ratio of 25-50:1 (Gasoline (A) : Oil (B)), only for the
state of California at 50: 1.
• Never use multi-grade oil (10 W/30) or waste oil.
• Always mix fuel and oil in a separate clean container.

Are any of you using these uber rich mixtures? Have you had success? Problems?

I have been using a 40:1 mix under the theory of playing it safe, but now I wonder if I shouldn't just go hog wild. After all it will still be within the manufacturer's recommendations someplace.

 

[boraticus]

I run tons of two cycle engines at ratios of 32 to 40:1. No problems with anything.

Engine recommended ratios are anywhere from 20:1 to 50:1 with most being closer to 50:1. Unless you're running some real old engines, 40:1 is good. If you're going to be flogging the engine hard, use 32:1.

 

[Johnny]

My Lawn Boy equipment gets 32:1 (extremely old Lawn Boy equipment) everything else gets 40:1

 

[Texan4Life]

I have an older chainsaw and weed eater that specs 40:1. Newer pole saw and 2 cycle generator spec 50:1.. everything gets 40:1. No extra smoking or any other problems on the stuff speced for 50:1.

 

[Tom_T]

Johnny, same as you with the Lawnboy's and everything else.

I'm just confused by such a wide range of acceptable mixes.

They may as well have said "mix it to the color you like and the piston won't score nor will the rings stick".

 

[Johnny]

Originally Posted By: Tom_T


They may as well have said "mix it to the color you like and the piston won't score nor will the rings stick".

That works for me.

 

[Mamala Bay]

Originally Posted By: Tom_T
In the US an oil mix of 50:1 is specified, below the equator things suddenly change to 25:1. You can check it out here
http://www.maruyama-us.com/uploadedFiles...s/BL3100%20.pdf
and here
http://www.poweruplawncare.com.au/maruyama/manuals/bl3100.pdf

Then there's Tanaka's instructions on the issue:
Fuel
• Always use branded 89 octane unleaded gasoline.
• Use Tanaka two-cycle oil or a quality two-cycle oil at mixing ratio of 25-50:1 (Gasoline (A) : Oil (B)), only for the
state of California at 50: 1.
• Never use multi-grade oil (10 W/30) or waste oil.
• Always mix fuel and oil in a separate clean container.

Are any of you using these uber rich mixtures? Have you had success? Problems?

I have been using a 40:1 mix under the theory of playing it safe, but now I wonder if I shouldn't just go hog wild. After all it will still be within the manufacturer's recommendations someplace.


50:1 in the US is because of EPA...emission pollution. Also the 4 stroke hybrid is because of California EPA again.

Just noting the 4 stroke hybid(Shindaiwa) has great torque performance, extra boost. Sadly the Shindaiwa C4(EB2510 hand held blower) high torque stroke engine on a commercial level is costing for repairs and it's not the oil(Shindaiwa One) at 50:1. Rather the design of the engine is puzzling.

For home usage with low hour usage I would recommend it if you want strong torque performance, the hand held blower did more than it asked for.

On a commercial level with high hour usage 2 stroke would be the way to go with lower repair cost!

 

[kcfx4]

anything modern is fine on 50;1, i have a cheap blower craftsman/poulan that requires 40;1, and its only ever had 50;1, never a problem. maruymama i can assure you is modern enough to be 50;1, 25;1 is pretty much unheard of, ppl run 32;1 or 40;1 in modern machienes and thats fine, if they like oil leaking out of muffler and or clogging the muffler screen if equiped

 

[andyd]

I started out 30 yrs ago mixing a rich 32:1 for my Stihl which specs 40:1. In addition to the saw , I picked up a Lawnboy, specs 32:1 and a Husquvarna weed wacker, 50:1. I also add a cap full of MMO to each tank. If the equip starts smoking , it is usually because the mix is getting old. Thank you very little EPA, for killing off 2 stroke engines.