Minecraft Version: 1.12.2
Overloaded version 1.12.2-0.0.55
Forge Version: forge-14.23.5.2825
AE2 Version: appliedenergistics2-rv6-stable-6

If you put a Fluid Storage Bus from Applied Energistics 2 on an Infinite Tank from Overloaded and then tell it to export a fluid it converts any fluid to any fluid.

To Reproduce:
Place a fluid export bus on a tank with any fluid as the to-be-exported liquid, then put an Overloaded Infinity Tank down, with a fluid storage bus on it, with any liquid in it. It will "convert" the fluid from the infinity tank to the liquid being exported.

Here's a video of it in action:
https://gfycat.com/agreeableincompletebuck

Reported on AE2 github, they said the issue was with Overloaded.
AppliedEnergistics/Applied-Energistics-2#4052