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Modern synthetics allow for oil change intervals of 12,000 mile+
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Not really.
Look hard at the study you referenced...
Finding 1
"For any type of vehicle, oil change intervals can be simply and safely extended beyond their current level
TO the maximum mileage recommended by the vehicle/engine manufacturer."
In other words, not some arbitrary
longer mileage figure that the synthetic oil its self
may be able to achieve on its own merit in conjunction with the discussed high efficiency oil filters, lab results,etc, but what the vehicles
MANUFACTURER recommends.
And we all know about the manufactures recommendations telling us to REDUCED oil change mileage periodicity for "adverse" driving conditions which consist of towing applications, dessert / high dirt areas and continuous short trips. Oil change intervals are often based on periodicity (maximum months) as opposed to actual "normal" driving mileage as well.
Now show me a vehicle / engine manufacturer that allows..
Quote:
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Modern synthetics allow for oil change intervals of 12,000 mile+
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