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My wife has purchased a brand new aygo fire, at it first service it has had an oil change but contrary to the information supplied in the owners handbook the oil for the first change was not 0w20 as stipulated by toyota but 5w-30 as shown on the service record.it is not a typing mistake, the oil is thicker than 0W20. will this cause a problem,i assume both oils are fully synthetic. I am worried as 0w20 is a high tech oil for close tolerance engines,it originated from aviation requirements, and used by mclaren , mercs,suburu, honda etc..ow 20 is nanotech and specific application, I feel 5w-30 is not right particularly on a new engine,what is your opinion please.?
The engine on the aygo is long stroked with fast piston speeds and for a car revs rapidly,the engine is a development of the daihatsu Charade, and very similar to a laverda triple motorcycle engine, I suspect longevity could suffer with too thick an oil,and of course economy. The latest aygo engines are down ported to assit with the torgue output, and to assist in the economy and clean burn, any ideas? My son is a degree mechanical engineer in aviation and he reckons the dealer is wrong in using the thicker oil, what do think? "desmodromic"
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