Natural to Synthetic Oil, any complications? Options

[hurley97]

I've always used natural oil because thats what I assumed the previous owner used. I want to switch to synthetic but I've heard bad things could come from doing so after using natural for so many years.

I can't remember exactly what possible problems I was told could arise nor can I remember where I heard it but it had something to do with the deposits that form and casing leaks, etc.

Is this just a myth? I plan to just flush the system like I did when I switched weights, would that have any negative consequences?

[95CelicaST]

I did the same thing, except I switched prior to 100K. I did start losing oil, don't know where though, because the engine is spotless and no oil on the ground, nor am I burning any.. anyways... I was told to use a bottle of Lucas oil's synthetic oil treatment. How it was explained to me is that when you switch from dino oil to synthetic it cleans out the deposits and the seals relax. This product is supposed to soak into the seals and keep them from leaking. So far it works. Its 1 quart, and you substitute it for 1 quart of oil on your next oil change.