Is it safe to change from synthetic oil to regular oil

[hero]

Hi Yrais Gurus,

I have got my yaris since Feb 2008, and did not use it that much due to my frequent travels. The car has about 9000 Miles and I always use "Mobil 1" synthetic oil since I owned it. During this mileage I have changed oil 3 times as it exceeds the permitted period (not more than 6 month or 6000 miles).

Now, I think to switch to regular oil (Mobil XHP) as it cheaper and more close to my car usage.

I have asked the dealer's maintenance workshop and they told me it will be Ok, and I can switch back to synthetic oil once I need to .

I still have some worries about this switch...Could you help me with your opinions and personal experience?

Thanks in advance.