该换了。不过，建议换油过程中留下sample做个UOA

来源: 于 2015-12-02 17:41:43 [旧帖] [给我悄悄话] 本文已被阅读：次

UOA = used oil analysis

send the sample to blackstone lab.  $28 will get you a detailed report on the percentage, density of the particles/metals in the oil.  it will tell you if you can extend the change interval in the future.

call them they will send you the containers for free.