Oil being pumped out of the ground can not be replaced in our lifetimes.
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The oil will not work as plasma in the blood.
There are a few different reasons for oil loss in a 2003 Suburban. This could be because the oil filter needs to be replaced or the oil drain plug needs to be replaced.
Oil
No oil pressure
Yes, and when it does it must be replaced as it is defective.
You car has leakage (check oil stains under the car) or piston rings are old and have to be replaced, or out of the gaskets inside the engine failed and needs to be replaced, or seals on the valves are failing and have to be replaced. Before to start doing something about that, find out where oil disappears.
Some of the oil can be replaced by applesauce, but not all of it.
no
The " dirty " oil in the oil filter mixes with the clean oil
valve cover gasket
Can the oil pump be replaced on 1994 Ford Ranger 4.0 without pulling motor?