I currently own a 2006 Hyundai Sonata LX with a 3.3 liter, 6 cylinder engine. I drive about 12,000 miles a year under normal conditions. I live in New Jersey where the temperature COULD range from zero in winter to 100 in summer. I have always used 10W30 engine oil all year long and never had a problem. I recently got a new mechanic and when I had the oil changed (in December), he put in 5W20, which I questioned. He said that 5W20 was what the manufacturer recommends in order to obtain the best mileage and this multi-weight oil can be used all year. I checked the owners manual, which said either 5W20, 5W30 or 10W30 could be used. I know that if the temperature falls into the single digits, it's better to have a 5W oil in the crankcase than a 10W. In summer, however, if temps get into the mid-upper 90's, the 5W20 oil will turn to sludge, since a 30W, or even a 40W is needed for these high temps. From what I've read, a 5W30 is best for winter and a 10W30 is best for summer. Am I correct?
2007-12-28
05:22:52
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8 answers
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asked by
Alan B
1
in
Maintenance & Repairs