Regulation of iron absorption and transport. Iron for use in synthesis of heme, iron-sulfur centers and other non-heme iron proteins is obtained from the diet and via release of recycled iron from macrophages of the reticuloendothelial system that ingest old and damaged erythrocytes (red blood cells).
Four-stroke oil is more like the oil used in cars but both 2-stroke and 4-stroke oil serve the same purpose - to keep the engine lubricated. Four-stroke dirt bike oil comes in a variety of weights like 10w-40, 20w-50 and so on. It is not mixed with gas.
To charge a motorcycle battery, you will need: 1  A low amp 12 volt battery charger. 2  Basic hand tools (usually the tool kit that came with the motorcycle) 3  A soft towel.  Distilled 1  water. Read your owner's manual if you have 2  it. Cover the motorcycle tank or area near where you are working with a soft towel.