Good product, it seems to me. (Translated review)

Many years ago I was looking for a product to lower the arm of my turntable very slowly. I recently discovered that silicone oil was the product to use. Its viscosity of 500,000 cst is exactly what I needed. The arm is neither too fast nor too slow to descend. The volume is too large for a single arm, but the price is right, so the purchase is justified. (Translated review)

A can with pipette would have been more practical (Translated review)