What oil is best? and what ratio?

[SOS Ridgerider]

It doesn't really have much to do with oil we use in chainsaws,
but I got to go to the Motorex USA and Spectro facility today. Went through some product training and got to tour the blending and bottling facility. Pretty cool to see.

 

[bwalker]

It doesn't really have much to do with oil we use in chainsaws,
but I got to go to the Motorex USA and Spectro facility today. Went through some product training and got to tour the blending and bottling facility. Pretty cool to see.

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Golden Spectro was very popular when I was growing up. My dad and uncle always ran it in their bikes and sleds.
I still remember the smell of GS. Might have to buy some and try it out. I havent ran any in 20 or more years. The SX Platinum stuff was pretty good in the 2000 CR250 I had.

 

[mrxlh]

After Techron soak
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Prior to Techron soak.
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As you can see the Techron didnt do anything despite soaking for multiple days just as I suspected.

Hmm, maybe try following the instructions on the bottle and actually put it in the fuel…

It definitely cleaned up a 268 and my filthy 55 with a high dosage when ran in the fuel.

 

[bwalker]

Hmm, maybe try following the instructions on the bottle and actually put it in the fuel…

It definitely cleaned up a 268 and my filthy 55 with a high dosage when ran in the fuel.

I followed the procedure that Lilspenny did and said worked.
I have put it in the fuel as well along with testing several other products. Not one did a thing there either.
I would be more than happy to put a high dose in the fuel and give it a try if you would like? Whats a high dose?
I would really like to find a product that removes piston crown carbon so I am all ears.

 

[mrxlh]

Pic 1, 2,3 were RA only 25:1. Pic 4 and 5 were RA 25:1 with an ounce of Techron in the tank. Saw is a 268XP that was “new to me”

 

[bwalker]

Pic 1, 2,3 were RA only 25:1. Pic 4 and 5 were RA 25:1 with an ounce of Techron in the tank. Saw is a 268XP that was “new to me”

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Thats compelling. I'll give it a try.
Keep in mind running excessively rich will do the same thing.
The piston pictured in pics 1-3 doesnt appear to be very dirty at all. Contrast that with the pic of mine with the crusty ash buildup. The ash build up i woukd like to remove. A thin carbon coating with slight wash at the transfers is normal and desired. It lets you know your tuning is close.

 

[mrxlh]

The 55 was extremely dirty, this was 25:1 Dominator. Hard to tell the improvement on the piston cause it was dirty AF…

 

[mrxlh]

The exhaust port tells a better story…

 

[pbillyi69]

just put some damn dawn dish soap in there it claims to remove oily build up.... lol

 

[bwalker]

The 55 was extremely dirty, this was 25:1 Dominator. Hard to tell the improvement on the piston cause it was dirty AF…

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That's not dirty. Completely normal. When carbon becomes a problem is when its raised or associated with mettalic ash build up as my pictures show. A carbon covered piston with small wash is the normal state.