I bought oil on ucando -> MOBIL SUPER 2000 10w40. ...

I bought oil on ucando -> MOBIL SUPER 2000 10w40. At the first glance, the oil was ok, but after doing about 800 km on this oil, the "oil pressure" indicator pops up when the engine is warm (because the oil is thinner then). The car ran on this oil and it was always ok. I tested the Ucando oil and it turns out that it is spilled. I bought oil in an automotive store and the problem disappeared after the first ride - the detector no longer appears on a warm engine ...

A lesson for the future not to buy oil online (where it is the cheapest - i.e. on ucando) because price is related to quality. The oil was definitely spilled. I regret to say right away that I will not buy from you again.