Hyundai, now a Toyota Yaris, there was a problem with diesel dilution of the engine oil with the early Yaris diesels and Toyota replaced affected engines. The problem has been fixed with modified turbo bearing seals, vacuum pump, pistons, and their rings. Also the ECU software as some cars went into an almost continious regen which contaminated the engine oil. My car is now on 5K miles and the oil level has not changed. The engine has an oil quality (diesel contamination) sensor in the sump which would light a warning light if there was a problem.
Last edited by: Old Navy on Thu 5 Mar 15 at 15:26
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