i was driving on the road with my car , suddenly i faced a diffcult uphill i put my car on 1st gear and i pushed my car to 6000-6200 rpm then i changed to 2nd gear is it safe ? " my car was warm enough" i passed abt 105 km

 

As long as the engine oil was full AND at full operating temp AND the engine is in good mechanical condition, there is nothing wrong with pushing you M30 engine to the redline. I do it fairly often on my 12 mile commute (once the oil is hot enough of course)