RenderLavaTank

public class RenderLavaTank extends TileEntitySpecialRenderer<TileLavaTank> {

    protected static Minecraft mc = Minecraft.getMinecraft();

    @Override
    public void renderTileEntityAt(TileLavaTank tank, double x, double y, double z, float partialTicks, int destroyStage) {
        FluidStack liquid = tank.getTank().getFluid();

        if (liquid != null) {

            float height = ((float) liquid.amount) / (float) tank.getTank().getCapacity();
            height += (1 * 0.0625);
            float d = RenderUtil.FLUID_OFFSET;
            //RenderUtil.renderFluidCuboid(liquid, tank.getPos(), x + (2 * 0.0625), y, z + (2 * 0.0625), 15 * (2 * 0.0625), height, 1);
            RenderUtil.renderFluidCuboid(liquid, tank.getPos(), x + (2 * 0.0625), y, z + (2 * 0.0625), d, d, d, 1d - d - (4 * 0.0625), height - (2 * 0.0625), 1d - d - (4 * 0.0625));
        }
    }

}