Quote:
Originally Posted by ddvette9
Last oil change was October 25. Hit 5k miles interval last week. I know synthetic is good for 5k but wow it was only 4 months ago what do you guys think
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Where did you come up with such figure? Synthetic oil is good for what's your oil analysis reveals. Same oil in a new Z can ONLY be good for 4000 miles interval but when the same car reaches 20000 miles, you can do 6-7000 miles interval. Your best bet will be to get a oil analysis done and ask them how often. They will guide you accordingly taking into consideration the condition of your car (particles they find in your car oil analysis).