Nothing I know about.� In the old days they said don't use synthetic in older engines due to potential seal leaks, but they've fixed whatever that was.� I've used synthetic in all my cars for years and I only buy old cars....never had a leak but the engines last a long time.

330,000 miles on wbx syncro (can't verify original engine though, I've put a 100,000 on it)

275,000 on Mercedes E320 wagon (original engine, I've put 210,000 since owning it)

Cheers, Anthony
'89 Syncro GL (Hidalgo)

--- On Tue, 9/9/08, Jeff Lincoln <magikvw@GMAIL.COM> wrote:
From: Jeff Lincoln <magikvw@GMAIL.COM>
Subject: Synthetic Oil question
To: vanagon@GERRY.VANAGON.COM
Date: Tuesday, September 9, 2008, 11:12 AM

I've never used synthetic oil - is there anything that needs to be
considered or done when switching from regular dino to synthetic? Or is it
asimple as an oil change?

--
Thanks,

Jeff
'90 Carat (Grover)
'86 (We call this one Parts)
'78 Bus (Melissa) Patty's Bus