honda606

Many high end automobiles don't have FRM cylinder walls either.

Chevron Supreme 10W-30 until 10k miles and then the synthetic of your choice after. That's my $.02.

TR-S2K

I had been using synthetic oil, specially Mobil1, more than 15 years in all my cars, from '86 Honda Accord LXi, to '91 Accord SE, to '94 Lexus LS400. I am a believer in Synthetic oil as you are. Yes, many high end cars use synthetic oil as factory fill, such as my wife '00 E430.
But only Honda specified that you should kept factory filled oil in the S2000 until the first oil change at either 7500 miles or 3750 miles because of special additive(s) in factory filled oil. Mercedes did not mention anything about special factory oil filled in owner manual like Honda.
Yes, some S owners changed to synthetic oil before 10k miles without any engine problem, others stay with conventional oil the first 10k miles and no problems either, so the choice is your, stick with Honda recommendations and get no headaches with warranty if needed, or do what you think is best for your S and be happy with it.


Honda606,
According to RoadRage, the new Halvoline GF4 formular is the best conventional oil you can buy easily at any autopart store. This new Halvoline oil has very moly count, up to 400 ppm, almost as much as Honda break-in oil in the S.

slalom44

[QUOTE=honda606,May 4 2005, 10:55 AM]WTF??

koala

Yeah, I didn't mean to turn this into a huge discussion about when to change to synthetic... I've done a lot of research on all of this and really the only "special" additive that Honda has in the break-in oil is extra moly, but that's mostly due to the fact that it's use as an assembly lube, so there is a high content of moly in the oil from when the engine was assembled.

For people that are really concerned about it, you can buy a tube of moly for relatively cheap..

One interesting thing I did notice from my personal experiences with the S2000 though. When I purchased my '01 it was used. It had 15,000 miles on it. The guy that owned it was a tech. at the dealer. He stated that he followed the manual 100%, changing the oil at 3,750 miles with conventional oil, and finally went to synthetic at 10,000 miles. (and no VTEC before 600 miles)

That car burned about 1 litre of oil every 1,000 miles.

kctham

interesting how some cars burn oil and some don't at all...