There are different kinds of rules that applies to engine oils. Generally, owner's manuals suggest that you change your oil and oil filter every 7,500 miles. Oil change specialists. however, suggest every 3000 miles or 3 months.
Periodic lubrication and oil changes in vehicles is usually done on the advice made by manufacturer. This is often done so as;
It is advisable to always check your owner's manual for the type and when to use lubrications and oil changes and make sure that the right oil/fluid is used for all component.
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