I am currently running a hutchinson rubber insert on 37X12.5R16.5 MT tires. Few of my buddies are also planning on doing the same. The lubricant that is recommended by the hutchinson is their own bottle, which is pretty expensive, around $50 per bottle. is there an alternative to this lubricant, a cheaper one with same properties? i know this is a water soluble lubricant. If you have any recommendations , i am all ears.