I have 4800 miles on my baby and the oil says less than 10% so I am going to bring it in.
Can we put synthetic oil on the first oil change? I thught I read something that you cant...

 

Personally, I'd wait until the next oil change. Synthetic oil is quite slippery and most feel it is best to wait a while since regular oil does a better job of breaking in the surfaces. I waited until 15K with my BMW motorcycle although it has particularly hard cylinder linings. Did it use any oil during the breakin period??

 

Every one of my cars for eyars, gets first change at dealer, usually free) bewtween 1k and 1.5k then second change about 2k later, at the second change I switch to Mobil1. Never had any problems. Some new cars ( I bleive some vettes and Porches, come with Mobil1 from factory).

 

You can switch now - trust me, I studied tribology and have a Mech Eng'g degree.

Your engine is "bedded in" at this mileage. Here are some facts to help you make your decision:
1) Modern cars have lower tension oil control rings
2) Modern cars have more precise tolerances
3) The mineral oils of today (as in the factory fill) are already very similar to synthetics in terms of friction reduction that they are essentially identical - this is especially true of the GIII hydrocracked oils widely used by Motorcraft, Pennzoil, etc.
4) Synthetic oils make sense if you are going to extended drains, or plan to drive the car very aggresively.
5) Synoil quality varies, and there are several parafinnic based synblends (like Lubrication Engineers' 8130 10w30) that outperform pure synoils - base stock is one thing, but it is the additive package that can make all the difference. The common synoils are PAO's, and their uptake of additives is problematic, which is why small amounts of esters are added.
6) If you want to stick with 5w20 (I plan not to), a terrific product at a terrific price is the Motorcraft 5w20 synblend, which I have found for $2.00 at Advance Auto. It is made by Conoco, and its wear analyses have looked outstanding. Its useful life fits into the "optimistic" alogorithms of the MID, so you can follow the Acura service intervals with much more confidence.

Search for link to the Oil Journals at S2KI.com on this Forum - it has a lot of detail on lubricants for the S2000, but the science is the same.