Will switching from synthetic oil to natural oil hurt the engine?

My husband says it will but the man at the oil shop says it won't. Who's right?Will switching from synthetic oil to natural oil hurt the engine?
It wont hurt anything.Will switching from synthetic oil to natural oil hurt the engine?
i was in automotive for a long time and that was always a question. but i did it myself on my truck with 170,000 miles and it was fine.
It's normally not a good idea to switch once your car has been accustomed to a specific kind of oil whether it's 5w-30 or 10w-30, synthetic, semi-synthetic, whatever. However, if you have a higher mileage car (75,000 miles or more) you will want to use a synthetic because it will protect your engine better.
oil shop guy
It will not harm the engine BUT why are you switching? Synthetic oil is superior and extends your drain intervals.
nope synthetic oil is always a tad bid thinner the natural oil. the natural oil will make you car run better also because it will give it more compression...
Well usually you switch to synthetic from regular oil, not the other way around, it depends on how long you had been using the synthetic, sticking to it would be best, but if you do have to go back to regular oil just change it more often
No it won't hurt your engine. You shouldn't go back and forth with the different types though. Natural oil is just as good as synthetic. Stick to natural oil.

say yes