Hello Folks,
 My question is, does the Blue Tank have any urethane in it? I know everywhere says that it rolls like a urethane but I cant deem to find a comment anywhere that says it is, I ask cuz someone on my team said the same thing so I dont now and btw I love my Blue Tank.

My experience with it so far is that despite it not being urethane at all, it is not immune to people commenting on how I'm using urethane and this or that condition, and probably bemoaning how I'm messing up the lanes using urethane on the wrong conditions for it.

If it means anything, I have used Blue Tank, and Covert Tank, neither of which cause carry down.

Carry down is really a misunderstood phenomena, caused by a low flaring ball picking up oil and then depositing it on the back-end, because the track hasn't moved enough. If you take a very low flaring reactive ball and throw it through heavy oil with a high rev rate, you get the same carry down.

It is the separation of oil rings, as the ball flares, that really prevent carry-down.

While it is true that a reactive ball will absorb oil, much more than a urethane or micro-cell polymer ball, it only takes about 3 seconds for the ball to travel down the lanes. No ball is going to absorb oil that fast. Therefore, oil absorption is a poor explanation for why "urethane" balls cause carry-down. It's the low flare cores common (but not always in) urethane balls.

I have my Blue Tank drilled 4 inch pin to pap. I get enough flare for the oil rings to separate, but not much. If it was drilled 2 inch pin to pap, then I could see the oil rings overlapping and then the ball may produce carry down.