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Dear forum, Happly bought a brand new 2018 corolla L, After 7000 miles, no problem, i guss i got board, ( prevuse car Mercedes 300SDL 1987) I checked oil, it looked bit cluady , Took a sample, and send to SOS caterpiler, Answer was all ok , Silicon(dirt) is high,211 ppm,(normal 20-30ppm)...