I've heard that one cannot go back to regular oil after putting in synthetic, but what about going from synthetic to synthetic blend??
The car came with regular oil, was changed to synthetic for 2 oil changes and now I put in synthetic blend. Is this ok?? Or should I go back to synthetic?? Please help.

 

I'm not sure, but I'll always use synthetic. Just stick with that.

 

To be honest i don't think it matters but i heard it has something to do with the gaskets

 

i ve heard the same thing about not being able to go back to regular oil, not sure if its true or not but thats why i stick with castrol syntec (synthetic blend)

 

Switching back and forth with oil types will have no ill effects. Synthetic oils are superior but are still oil. Some have claimed seal or gasket problems from switching to synth at a high mileage but that is far from a proven fact.