| For decades car owners have pondered such eternal | | | | Also, an equally daunting question for some has been |
| questions as, "What's that sound coming from my | | | | the debate over whether or not to use synthetic |
| engine?" and "Is that part really necessary?" One of | | | | motor oil. Believe it or not, once upon a time such |
| the most elusive pieces of car information though, | | | | liquids were not available to consumers or race car |
| has been how often should one change their oil? | | | | drivers. Then something spectacular happened in the |
| Every 3,000 miles? 5,000 miles? 9,000 miles? | | | | 1970s â no, not disco â the creation |
| While there may not be a standard answer to this | | | | of synthetic motor oil. Mobil 1 and Amsoil began |
| timeless inquiry, general consensus from car | | | | marketing the stuff like gangbusters and in the |
| enthusiasts, talk show hosts, car magazines and | | | | decades that followed many others joined the |
| dealers estimate the right time to be around 5,000 | | | | bandwagon. |
| miles, give or take the type and age of the vehicle. | | | | |