They can be mixed.
synthetic to conventional - ok conventional to synthetic - no
Yes, you can. It is even sold as a Synthetic Blend.
Synthetic is 100% synthetic. There are blends sold that are part synthetic & regular oil. Look for a quart that sates FULL or 100% Synthetic. If it says Synthetic Blend then it is not 100% Synthetic.Synthetic is 100% synthetic. There are blends sold that are part synthetic & regular oil. Look for a quart that sates FULL or 100% Synthetic. If it says Synthetic Blend then it is not 100% Synthetic.
its the same process as changing synthetic oil, except you use regular oil.
It might be... It's highly not recommended to mix regular and synthetic oils.
you should never mix regular oil with synthetic. it will harm your engine over time. i would go get everything flushed out then add either one or the other.
10w-30 either synthetic or regular Castrol for regular or Mobil 1 for synthetic
Synthetic oil or a blend of Synthetic and regular oil is much better for your vehicle than regular oil alone. Synthetic oil is MUCH more expenshive. If you change your regular oil every 3 months or 3,000 miles I will be fine.
Yes but once you do there is no turning back and no mixing regular motor oil ever again with the synthetic oil....only straight synthetic....or use semi synthetic....now that can be mixed with regular motor oil in a pinch.
Yes you can.
Yes
Yes.