Originally Posted By: dave1251
That depends. I am for the improvement as long as the $$$ invested is justified. But how many oil related failures are there are today? But once a quart of oil cost $15 everyone selling PCMO's can go fly a kite.
Depends on the application. The VW 2.0T FSI motors have had cam follower failures, camshaft failures, etc which may be oil-related to a degree. Certain engine designs are more punishing on oil than others.