“Their cover for fill is tougher than RPM40. But 4 stars for leaking just as bad. Yes I use only their coils and make sure seated. Doesn't matter the coil type. RPM40s cover is thinner and breaks faster than these. But they leak as much!”
“Using a 60ml bottle of fluid, the hole to fill it up is so small. If you don't have it a the right angle, the fluid spills over the side. Fill hole is just too small.”
