The closure of the Red Sea and Suez Canal and Egyptian major Egyptian pipelines, events none of the parties have threatened or mentioned, wouldn't change much how three main players, US, China, Japan get their oil. All three have open routes by way of the Persian Gulf and Arabian Sea and East. This avoids Egypt entirely.

It also has to be noted that this leave western Europe in a bit of a bind but here again they get a good part of their oil from Russia and pipelines well north of the area concerned. There are also several pipelines that skirt the area entirely but the specifics or capacity, design, and international relations make estimating how useful they may be beyond my kin.

http://www.theodora.com/pipelines/middle_east_oil_gas_products_pipelines_map.html

Click on the maps for larger versions.

There will be, as recent vituperation makes clear, some fraying and fretting around the edges, worse case they reroute around the horn, but it isn't the cataclysmic event the usual hair-on-fire sources, the same ones who have been so very wrong so often, are claiming.

If it makes you feel better go ahead and fill your tanks now. I think the savings are going to wash out in the mid-term no matter what you do, this would be different if you could say ... invest in a tanker load of oil, but unless you have facilities to lay in a huge supply, and the means to store it and get it into the market smoothly, your savings are going to be minimal.