Identifying new models for human eye diseases By Sara Cassidy, M.S., Ph.D. Although it is difficult to measure the impact of chronic conditions like eye disorders, Prevent Blindness America estimates that eye disorders and vision loss cost $139 billion in 2013, placing these conditions among the most expensive health disorders in the US.
Curing deadly engine vacuum leaks. Vacuum leaks can be located with spray carburetor cleaner or a can of WD-40. If the area is obstructed by linkage or hoses, use an extension nozzle to pinpoint the area of the vacuum leak.
Injectors only leak if the pintle fails to seal. If you have milage on your injectors, you can have them tested as a precaution. More likely though, everything your describing is very normal. My oil is always black within minutes of changing it, and that is with oil changes every 2K and a bypass filter.