Who told you it is not recommended? You can mix synthetics as long as they are of the same weight. You can even mix synthetic with conventional oil.
It might be... It's highly not recommended to mix regular and synthetic oils.
No, you could mix with synthetic blend but its not recommended.
Yes, you can even mix them.
5w30 oil is recommended. conventional, semi-synthetic and full synthetic oils are all compatible with this engine.
Yes you can mix different brands but I recommend you do not mix different weights. You can even mix synthetic oil with conventional oil. But as the weight of the oil is critical, do not ever mix one weight of oil with another, no matter if it is synthetic or conventional oil.
Yes, you can even mix it with conventional oil. Just make sure the weights are the same.
Yea they take synthetic oil, make sure you don't do otherwise cause you can not mix different oils!
Yes you can. Contrary to a popular belief it does not hurt to switch between or mix synthetic and conventional oils.
No, it is not safe to mix essential oils with isopropyl alcohol as it can cause skin irritation and other adverse reactions. It is recommended to use essential oils with a carrier oil instead.
No, synthetic oil will not mix with water. Like conventional oils, synthetic oil is hydrophobic, meaning it repels water and does not dissolve in it. When mixed, the two substances will separate, with the oil floating on top of the water due to its lower density.
No, you must use oils recommended by VW. Blends are verboten.
In a Brand new engine it is recommended that you get the rings seated before you start using Synthetic oils. So run your engine for 3,000 miles and then you can switch to a Synthetic.