wire rope question

how the rope has a fiber core center, the fiber will be lubricated with a mineral oil.

I can't used a sintetic oil, because the additives are incompatible with the origen mineral oil, and it can attack the sisal.

It's better used an oil that can penetrate to the nucleo.

How do you know that the additives are incompatible?
Even if they are proven incompatible, what difference does it make, providing that this synthetic oil has equal or better AW, antirust and anti-oxidation characteristics to mineral oil? What is the basis of your fear that ANY and/or EVERY synthetic fluid would “attack the sisal”? Do you know of any case study or theory that would support this fear?
If the incompatibility of the additives is such a big issue for you, are you aware of the fact that the additives in some mineral-based oils are incompatible with the additives in other mineral oils?

how do we know or choose the right oil or if it has additives?

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Blendtec 

"Wire ropes are lubricated during the manufacturing process. If the rope has a fiber core center, the fiber will be lubricated with a mineral oil or petrolatum type lubricant" (1). http://www.machinerylubricatio...ire-rope-lubrication

10% to 15% of the core’s weight is the original lubricant, if I use a oil relubrication incompatible with the original lubricant, the additives could wear quickly and created damaged in the mechanical elements.