I personally use Mobil 1, and stick to 3000 mile changes. I will probably change to AMSOIL S2000 20w-50 soon, but most likely will stick to the same change schedule. My GTS is too dear to me to skimp. -----Original Message----- From: Henry S. Winokur [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 21, 1999 10:29 PM To: Multiple recipients of list Subject: RE: Synthetic Oil > better under all circumstances AND allow extended drain intervals. Triumph > DOES require full synthetic in their T595. Full synthetics > lubricate so well > that you should stay away from them during engine break in. The > evidence is Say what you will about synthetics, but I like em for one reason (not to mention the ones Kevin already has): long drain intervals. I prefer to ride my bike rather than worry about (and waste my limited riding time) doing maintenance chores that can better be done when I can't ride--like in February. That's why I put the Scott Oiler on. One less maintenance item. Changing the oil is another. However, I will not be changing to AMSOIL synthetics in the GTS until I have at least 6K miles on it... and I'm not quite up to 3000. Henry S. Winokur '87 Concours, '94 GTS 1000 AMA Lifer, COG #39, MRF, MSF/MD MSP Certified Instructor West Bethesda, MD