Saudi Arabia continue selling oil in american dollars, others don't.
I read news that the Russian currency lost 20% in value against the pound due to the low price of oil. I particularly like free competition, if the Russians are selling oil at a lower price it is up to others to do it too or they will lose market share. I don't like Putin but I like russians. I don't like Xi but I like chineses.
Prices in Brazil have decreased but have not yet reached retailers, gas stations will probably never lower prices. When the price of oil decreases, all production of consumer goods decreases, but that is not what I see in this phase of the corona. The Brazilian oil company decreased production.
Until the sale price is low, feasible, but the governors of each state stipulate the final price and with this the price is inaccessible, despite following the foreign market.
During the military period in Brazil, they created ethanol, a biofuel (98% alcohol) made from sugar cane. Every time we were going to improve then the price of oil went up and we were stagnant. Car manufacturers at the time were remnants of World War II such as Italy (Fiat, Iveco), Germany (Volks), USA (Ford, Chevrolet), UK (Volvo). Mercedes Benz, Audi, Pegeout, Alfa Romeu were rare, only for the rich. In the 90's there was a revolution and Japanese, Russians, South Koreans entered the market.
Chilean wines, Argentine meats, fruits and vegetables from Latin America began to appear in supermarkets. The problem with Brazil is that it is a country that still prefers vicious trade over virtuous trade, very closed to new products, the intention is to benefit and protect local producers even if you have to pay more.
Brazilian gasoline usually has 27% alcohol, that is, it becomes less energetic. At least we don't stop when a new oil crisis occurs in the foreign market.