What percentage of this low cost oil has been powering the India economy?India doesn't need that much oil anyway. It mainly imports oil for its refineries and then sells the derivatives. Without Russian oil, these refineries will simply close down.
40% is 40%, that is not a small amount. If is high then 25% tariffs on the relative small India manufacturing sector is not a high price to pay given then most countries around the world are being tariffed by the US.