[Chgogal]

“When President Trump took office, oil supplies in storage were plentiful at the end of the Obama administration. The largest oil storage place in America and perhaps the world is in Cushing, Oklahoma. Below are figures for March 2015.”

The above statement implies that Obama purposefully increased oil reserves.
EIA SPR over the past 50+ years.
https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=pet&s=mcsstus1&f=m

During the Covid debacle and the decrease in oil prices due to the sudden and dramatic lack of demand gave the country an opportunity to top up the SPR. Trump intended to do just that but Congress in its great wisdom said no. Oil was less than dirt cheap due to world prices reacting to lower demand and over supply. It would have been a good deal. Now we only have 17 days left in the SPR and an impending Mid East war.

https://www.reuters.com/article/us-global-oil-usa-reserves-idUSKCN2251QU

https://www.breitbart.com/politics/2021/11/25/flashback-democrats-cut-trumps-replenishment-of-oil-reserve-when-prices-were-cheap-strike-a-blow-to-big-oil/

“ “We're going to fill it right up to the top — saving the American taxpayer billions and billions of dollars, helping our oil industry,” Trump said at the time.”

[gleeaikin]

Many complained that Obama energy policies were hurting oil production. It does not appear that was thr case.

Topping off the SPR when prices are low is generally a good idea. I like to top off my canned soup supply when there are good sales.