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Author Topic: Re-mixing pre-mix fuel  (Read 858 times)

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Offline Drifter27

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Re-mixing pre-mix fuel
« on: April 09, 2018, 10:13:58 PM »
Hello

I managed a good supply of stihl motomix priced right so have been using that for everything. How do I lower the fuel oil ratio using this fuel?

Me and my old man were cutting down locusts trees a year or 2 ago and his 028 super was acting up, he said he'd been having a lot of problems with it the last few years and though it might be almost time to put the ol girl to rest. I gave him a can of fuel I just opened because I knew he always let his sit forever and told him to try that. Couple months ago I helped him with a mulberry and his retirement present 250 wood boss was nowhere to be seen and he started and finished the tree with no problems at all

I like this stuff. Can I mix it down any?

Offline AdkStihl

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Re: Re-mixing pre-mix fuel
« Reply #1 on: April 09, 2018, 10:22:57 PM »
Sure
I do all the time.
J.Miller Photography

Offline Drifter27

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Re: Re-mixing pre-mix fuel
« Reply #2 on: April 09, 2018, 10:27:15 PM »
Do I just math it out and put the oil in the moto can? Does it separate at all if it sits a few months?

Offline starmac

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Re: Re-mixing pre-mix fuel
« Reply #3 on: April 09, 2018, 10:56:15 PM »
Mix it down? As in add oil to it or what are you trying to achieve?
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline Drifter27

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Re: Re-mixing pre-mix fuel
« Reply #4 on: April 09, 2018, 11:04:41 PM »
I want to get closer to a 32:1 mix by adding stihl oil to stihl motomix.

Offline starmac

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Re: Re-mixing pre-mix fuel
« Reply #5 on: April 09, 2018, 11:41:51 PM »
Personally if I thought for some reason I needed 32 to 1, I would just mix it with gas, there is no way to tell if it is the exact same oil, may not matter though.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline HolmenTree

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Re: Re-mixing pre-mix fuel
« Reply #6 on: April 10, 2018, 12:17:53 AM »
Stihl MotoMix has Stihl ultra full synthetic in it.
200ml (6.7 US ounces)in 10 liters gas(10.5 US quarts) makes 50:1

200ml to 8 liters of gas makes 40:1
200ml to 6 liters makes 30:1

200ml to 6.4 liters makes 32:1

Sorry for the metric, doing the math in 10's is so much easier.
We get our mix and gasoline in metric measurement in Canada.😊
Making a living with a saw since age 16.

Offline HolmenTree

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Re: Re-mixing pre-mix fuel
« Reply #7 on: April 10, 2018, 11:02:15 AM »
Now to compare apples and oranges.
This is what I get for mix oil from my Stihl/Husqvarna dealer.
I can no longer get full synthetic Stihl Ultra only the old school Premium.

The XP mix in the middle is an old bottle no longer available, in metric 100ml labeled semi synthetic with fuel stabilizers.

Xp bottle on the right comes from Charlotte, North Carolina. No mention of semi synthetic or  fuel stabilizers.
It's uneven fluid ounces,U.S. Gal. and liters is not very precise at all.

So you can guess which bottle of mix I'll keep using.  :)


 

 
Making a living with a saw since age 16.

Offline HolmenTree

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Re: Re-mixing pre-mix fuel
« Reply #8 on: April 10, 2018, 11:18:54 AM »
In my chainsaw racing days this syringe worked perfect for small batches.


Making a living with a saw since age 16.


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