Most cars today recommend 7500 miles for normal service. Half that for
severe, thus the 3750. You may fall at either of those or someplace in
between, depending on your driving conditions and habits. I shoot for 7000
miles, but I drive under good conditions, half highway driving. Short trips
in winter lowers the distance, as does hot summer in the desert. You may
want to cahge ad different intervals in different seasons.
Read the manual, assess your driving, choose a miles that suits you. Oil
change outfits still say 3000 miles, but they are motivated by profit, not
your well being. Some call it cheap insurance, I call it a rip off. I've
never encountered an oil related engine problem and I often keep a car for
I change at either 5,000 miles or 10,000 miles. I use 5,000 for
vehicles still in warranty and those I drive less frequently. I use
10,000 miles for vehicles out of warranty and over 100,000 miles that I
drive frequently. I use Mobil 1. Never had an oil related problem
either and the 5 and 10K intervals are VERY easy to remember.
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