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?

[hurley97]

well, I just did it... lets hope for the best

drained the remaining Castrol High Mileage 5W-30
changed the filter
put in a little less than 4qts Mobil 1 Full Synthetic 5W-30
put in a bottle of some No-Leak stuff thats supposed to stop leaks and re-condition seals and what not.

I just didn't get the LucasOil version because it was like $15 as opposed to $5 and I was already unhappy about spending twice as much on synthetic oil. but I'll get it next oil change, I'm sure its much more expensive because its good stuff.