diff --git a/lua/oil/init.lua b/lua/oil/init.lua
index 558d657..0b3b09e 100644
--- a/lua/oil/init.lua
+++ b/lua/oil/init.lua
@@ -277,7 +277,7 @@ M.open_float = function(dir)
   local winid = vim.api.nvim_open_win(bufnr, true, win_opts)
   vim.w[winid].is_oil_win = true
   for k, v in pairs(config.float.win_options) do
-    vim.api.nvim_win_set_option(winid, k, v)
+    vim.wo[winid][k] = v
   end
   local autocmds = {}
   table.insert(
@@ -540,8 +540,8 @@ M.select = function(opts)
       })
     end
     if opts.preview then
-      vim.api.nvim_win_set_option(0, "previewwindow", true)
-      vim.api.nvim_win_set_var(0, "oil_entry_id", entry.id)
+      vim.wo.previewwindow = true
+      vim.w.oil_entry_id = entry.id
       vim.api.nvim_set_current_win(prev_win)
     end
     -- Set opts.split so that for every entry after the first, we do a split
diff --git a/lua/oil/mutator/preview.lua b/lua/oil/mutator/preview.lua
index f84e8c2..073e4b1 100644
--- a/lua/oil/mutator/preview.lua
+++ b/lua/oil/mutator/preview.lua
@@ -103,7 +103,7 @@ M.show = vim.schedule_wrap(function(actions, should_confirm, cb)
   vim.bo[bufnr].filetype = "oil_preview"
   vim.bo[bufnr].syntax = "oil_preview"
   for k, v in pairs(config.preview.win_options) do
-    vim.api.nvim_win_set_option(winid, k, v)
+    vim.wo[winid][k] = v
   end
 
   render_lines(winid, bufnr, lines)
diff --git a/lua/oil/mutator/progress.lua b/lua/oil/mutator/progress.lua
index 402565b..b837495 100644
--- a/lua/oil/mutator/progress.lua
+++ b/lua/oil/mutator/progress.lua
@@ -59,7 +59,7 @@ function Progress:show(opts)
   })
   vim.bo[self.bufnr].filetype = "oil_progress"
   for k, v in pairs(config.preview.win_options) do
-    vim.api.nvim_win_set_option(self.winid, k, v)
+    vim.wo[self.winid][k] = v
   end
   table.insert(
     self.autocmds,
diff --git a/lua/oil/util.lua b/lua/oil/util.lua
index 46e94df..a0bc0ee 100644
--- a/lua/oil/util.lua
+++ b/lua/oil/util.lua
@@ -348,12 +348,8 @@ M.add_title_to_win = function(winid, opts)
       noautocmd = true,
     })
     winid_map[winid] = title_winid
-    vim.api.nvim_win_set_option(
-      title_winid,
-      "winblend",
-      vim.api.nvim_win_get_option(winid, "winblend")
-    )
-    vim.api.nvim_buf_set_option(bufnr, "bufhidden", "wipe")
+    vim.wo[title_winid].winblend = vim.wo[winid].winblend
+    vim.bo[bufnr].bufhidden = "wipe"
 
     local update_autocmd = vim.api.nvim_create_autocmd("BufWinEnter", {
       desc = "Update oil floating window title when buffer changes",
@@ -401,11 +397,7 @@ M.add_title_to_win = function(winid, opts)
   end
   vim.api.nvim_buf_set_lines(bufnr, 0, -1, true, { " " .. title .. " " })
   vim.bo[bufnr].modified = false
-  vim.api.nvim_win_set_option(
-    title_winid,
-    "winhighlight",
-    "Normal:FloatTitle,NormalFloat:FloatTitle"
-  )
+  vim.wo[title_winid].winhighlight = "Normal:FloatTitle,NormalFloat:FloatTitle"
 end
 
 ---@param action oil.Action
@@ -542,7 +534,7 @@ end
 M.run_in_fullscreen_win = function(bufnr, callback)
   if not bufnr then
     bufnr = vim.api.nvim_create_buf(false, true)
-    vim.api.nvim_buf_set_option(bufnr, "bufhidden", "wipe")
+    vim.bo[bufnr].bufhidden = "wipe"
   end
   local winid = vim.api.nvim_open_win(bufnr, false, {
     relative = "editor",
@@ -588,7 +580,7 @@ end
 ---@return nil|integer
 M.get_preview_win = function()
   for _, winid in ipairs(vim.api.nvim_tabpage_list_wins(0)) do
-    if vim.api.nvim_win_is_valid(winid) and vim.api.nvim_win_get_option(winid, "previewwindow") then
+    if vim.api.nvim_win_is_valid(winid) and vim.wo[winid].previewwindow then
       return winid
     end
   end
diff --git a/lua/oil/view.lua b/lua/oil/view.lua
index a8068a8..fb01bdb 100644
--- a/lua/oil/view.lua
+++ b/lua/oil/view.lua
@@ -162,7 +162,7 @@ M.set_win_options = function()
         vim.api.nvim_win_set_var(winid, varname, prev_value)
       end
     end
-    vim.api.nvim_win_set_option(winid, k, v)
+    vim.wo[winid][k] = v
   end
 end
 
@@ -172,7 +172,7 @@ M.restore_win_options = function()
     local varname = "_oil_" .. k
     local has_opt, opt = pcall(vim.api.nvim_win_get_var, winid, varname)
     if has_opt then
-      vim.api.nvim_win_set_option(winid, k, opt)
+      vim.wo[winid][k] = opt
     end
   end
 end
@@ -535,7 +535,7 @@ M.render_buffer_async = function(bufnr, opts, callback)
   end
   local handle_error = vim.schedule_wrap(function(message)
     if not preserve_undo then
-      vim.bo[bufnr].undolevels = vim.api.nvim_get_option("undolevels")
+      vim.bo[bufnr].undolevels = vim.api.nvim_get_option_value("undolevels", { scope = "global" })
     end
     util.render_text(bufnr, { "Error: " .. message })
     if callback then
@@ -566,7 +566,7 @@ M.render_buffer_async = function(bufnr, opts, callback)
     loading.set_loading(bufnr, false)
     render_buffer(bufnr, { jump = true })
     if not preserve_undo then
-      vim.bo[bufnr].undolevels = vim.api.nvim_get_option("undolevels")
+      vim.bo[bufnr].undolevels = vim.api.nvim_get_option_value("undolevels", { scope = "global" })
     end
     vim.bo[bufnr].modifiable = not buffers_locked and adapter.is_modifiable(bufnr)
     if callback then