It depends on what you are putting the oil in, but in most cases since the motor oil is a lower viscosity the internal parts will not recieve the proper lubrication. On the moving parts the oil will generally not coat them as well as required causing overheating and wear leading to premature failure.
It would depend on the application. More info needed.
The front seal is out on your pump. Replace the seal
Engine oil No. 46 how does this relates to the engine oil type xxWxx?
engine oil is thick than hydraulic oil
Yes, I definitely would. Replace the hydraulic oil not the container. The container is fine, just flush it and the hydraulic system out clean.
you can not mix hydraulic oil in engine oil because if you do a fire will occure and then you will blow up in a million pieces.
Depends largely on engine size. Bigger engines need more oil. Tractors require both engine and hydraulic oil. The hydraulic oil is used both by the hydraulic pump and by the transmission.
No, absolutely not.
The engine powers a hydraulic pump, which then push the hydraulic oil to the pistons.
The "Pour Point" of engine oil is about -44ºF.
Hydraulic oil does not lubricate properly it has a different chemical makeup and viscosity. I would never do that.
hydraulic tappet's does it have enough engine oil if yes flush engine oil and add new
Engine oil lubricates and protects the engine. Hydraulic oil is used to operate implements/attachments, as well as to lubricate, protect and cool the transmission.