single- vs. multi-grade oils

dark_knight

Member +
i live in the tropics (equator) where we seldom see temps go down below 15deg C (59deg F) on the coldest of days/nights here and so was wondering, instead of using the multi-grade 10w-30 or similar oils for my fte engine, can i just swap that for a single-grade oil like SAE-30 or -40 oil..?

what are the engine health 'dangers' related to running a single-grade oil in this engine..? i could be wrong but i presume that the chemical agents used to make an oil multi-grade also let/make it break down faster than single-grade oil..? let me know what you think..
cheers..
 
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