3. Can two lubricants be mixed in the same engine?

        It is not recommended, but if for some reason different oils must be mixed (to fill the tank for instance), it is important to follow certain recommendations.It is a good idea to use an oil with the same level of quality as the one that is being used in the vehicle. And, if possible, they should be from the same manufacturer. Additionally,during the next oil change, it is a good idea to replace the oil filter with a new one.