Opti-Bond Tire Gel – 32oz, Long Lasting Tire Dressing, Water Based Tire Shine Spray, Protects Against UV Damage

Does this stuff leave the tires matte black after it breaks down/rinses off over time?

I have a older bottle of opti bond and it looks like its separating. Does that mean its gone bad? or will shaking it back up be alright?

This stuff has been great on tires - but I'm wondering if anyone has used it for plastic exterior trim (think Jeep Wrangler).

Is this stuff kind of like the pinnacle black onyx tire gel? Does it help to moisturize the tires and protect the tires from cracking?