YoYoFactory - Keep your yo-yo bearings playing top notch!
The Loop/Response performance oil is a high viscosity lubricant that is designed to make yo-yos more responsive. This oil should used to make your "tug responsive" or if you want oil that will make your looping yo-yos perform the best.
The Long Spin performance oil is a low viscosity oil that is intended to maintain unresponsive bearings. If used regularly, YoYoFactory Long Spin oil can actually increase the life of a bearing and help you receive the absolute best performance out of your ball bearing.
Some lube info. Any type of lube on a completely clean spinning bearing will just slightly slow down the bearing. And too much thin lube can really slow it down - so you only want 1-2 small drops when you do use any of it. Bearings will eventually spin completely smooth again once the lube is broken with play. Adding thin lube is actually a good thing as it will increase the overall life span of the bearing - it just needs to be broken in again after being applied.
NOTE: When applying thin lube you only want 1-2 very small drops. If you get thin lube on the response system (silicone pads) it will absorb it and possibly cause it to fall out early.