Cars technical recommendations and advices:
When you check the buffers and the buffer’s system, you have to check pressure sucker (absorbent). The check must be done when the car is stable on the ground. It is not advisable to check when the car is elevated by the jack.
The check can be completed by pressing all the cars corners. If you noticed that the car goes up and down more than once after you stopped the pressing; you have to check the buffers carefully to ensure its intact.
In this case you have to elevate the car by the jack, hold the buffers strongly in a circular way; move the buffers to ensure absence of oil or corrosion to the interval rubbers between the buffers and the tire.
If you noticed that thick oil covers the exterior parts, this means that the intervals rubber which prevents oil leakage is corrosioned. In this case you can’t add oil, but you need to change all the buffers, namely the replacement for the two parts