Am planning to import a RX8 6 speed manual from Singapore to Sri Lanka. The climate and temperature is about the same as Singapore/Malaysia and want to know from owners in Singapore or Malaysia the following.

1) Any recalls of RX8 engines from Singapore as in U.S?
2) What year i.e 2004 or 2005 would be a good car to get in terms of no glitches?
3) What viscosity of oil does Mazda singapore user manual recommend for RX8?
(U.S.A user manual states 5W-20, I would think this is not good for our temperature climate)
4) Have you got a Singapore/Malaysia user manual for the RX8 to share/download from the web.

Any help with the above Q's will be greatly appreciated. Thanks