well for my accord i use 10W30 in the winter and in the summer. i used to put in it castrol but the natural oil sucks. it will get dark after 1000-1500 miles, then i switched to mobil one and my car runs better, and the oil at 3500 miles is clean as new. Also i use the mobil one oil filter.
do u reccomend the synthetioc oils for high milege engines ? i have 126k miles on my car, and i wanna protect the engine for another few years.
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