Dear Hummergirl
That mechanic telling you to wait until 10K for synthetic may mean well but probably is misinformed. Your engine better be oiled well no matter what oil from the get go or you will surely sieze.I'm sure he was referring to breakin period but I think it doesn't really matter. For some reasons emotions run high when it comes to synthetic vs conventional. Synthetic is more slippery than coneventional and reduces the waer and tear of startups which is especially pertinate to cold climates. Us southerners don't have to woory about that!
I attribute synthetic from preventing a siezed 454 Merc V8 inboard in my boat. I blew out a oil filter relocate hose and lost oil from the engine and unsure of the exact problem until dockside, I idled home 30-40min when I really should have shut the engine down.
Pete
