However, we recommend for the best possible protection and maximum vehicle life, that you change your motor oil every 50,000 miles or 5 years. If an oil change is delayed, SynLube™ Lube-4-Life ® provides an added level of assurance and protection that is not available in any conventional oils.
If your vehicle is mostly driven in slow city stop & go traffic and you average only about 20 MPH,
then at 3,000 hours of engine operation your vehicle will have ONLY 60,000 miles.
If your vehicle is used mostly for high-speed highway driving at 70 MPH,
your vehicle will have 150,000 miles on long before you reach 3,000 engine hours
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Start up boundary lubrication is provided by esters, most synths have these and often used as additive carrier rather than Mineral.