Reagan never once said "trickledown." That was a term liberal dementia created to demonize Reaganomics. As for oil...American foreign policy post OPEC embargo was to sell military weapons to Saudi Arabia to keep pumping oil to keep the price down, to bankrupt the USSR whose only export of worth is oil. One of the main reasons why Bush Sr suckered Iraq into invading Kuwait was to get Iraqi oil off the market to bail out the bankrupt former USSR and get money flowing there before their nukes ended up on the black market, and bonus dude, it bailed out Mexico that saw runaway inflation turn their peso from 30 to $1 to 3000 to $1. Reaganomics 101 had more to do with trickle up than anything, but we'll debate that on another issue.