First, a more stable synthetic oil (an oil with high paraffinicity and, therefore, high Viscosity Index (VI, signifying high stability to change in viscosity over a wide temperature range) and low viscosity) will extend the interval between oil drains. That in turn reduces the amount of used oil requiring disposal. According to the EPA, some 200 million gallons each year are dumped into the environment.Sounds great, although the question I still have concerns the process of conversion: how "green" is it?
The other benefit of a low-viscosity oil is reduced engine friction and thereby improved fuel economy.
Second is the obvious benefit in being able to recycle a portion of the ever increasing stream of waste plastics. Plastics represent 11 wt% of municipal solid waste today, up from less than 5 wt% in 2001.
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