From Klotz

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Product details
* Blend of degummed castors.
* Ounce for ounce, the toughest lubricant made.
* Blends with gasoline or methanol.
* Contains Klotz Red for visual identification.
* Distinctive racing bean-oil odor.
* Not recommended for extreme cold.
* Available in 16 oz. poly bottles, 10 per case or 1 gal. poly bottles, 4 per case; sold each.

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It also blends with Kerosene for use in diesel. Most castor oils will NOT blend with kerosene and in that case, the miscibility of Castor with ether, allows that blend to dissolve in kerosene. But Klotz Benol castor WILL blend with kerosene. But this must be above freezing temps. In that case, the castor drops out of solution.

Don't know about Isopropyl though.