What specifically does the owners manual you got with your Spyder recommend for oil? What other countries have in their manuals is immaterial.
Despite the fear mongering, I do not know of one case on this forum, no matter the internal combustion device they use for transportation, that has had an engine failure warranty denied because the dealer/manufacturer analyzed the oil. Heck, I can't recall seeing a post about an engine failure on a new vehicle that was related to oil weight in a warranty period. If someone can find such a thing, please post.
Despite the fear mongering, I do not know of one case on this forum, no matter the internal combustion device they use for transportation, that has had an engine failure warranty denied because the dealer/manufacturer analyzed the oil. Heck, I can't recall seeing a post about an engine failure on a new vehicle that was related to oil weight in a warranty period. If someone can find such a thing, please post.