I'm new here. I have a 2001 V70 T5 manual with 19,700 miles. I use the dealer's 5/30 every three months since purchase (3/01). I want someone to talk me into synthetic motor oil. I really want to switch, but for some reason I'm afraid. What do those opposed to synthetic say against it? Thanks.<p>It's not whether you win or lose...it's how you place the blame.