im going to assume you drive at least 15kms in cold weather in a single drive and have a relatively newer car
Thats the distance it takes for oil to completely heat up and remove most/all of the moisture in crankcase. That is essential for keeping oil in good health for longer duration.
You may extend your oil change time if you qualify the above. For the coming summers, 7-10km should be enough per trip for oil to heat up.
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