diff --git a/module/campaign/campaign_base.py b/module/campaign/campaign_base.py
index 30afd0692..011e226be 100644
--- a/module/campaign/campaign_base.py
+++ b/module/campaign/campaign_base.py
@@ -136,6 +136,8 @@ class CampaignBase(CampaignUI, Map, AutoSearchCombat):
             self.lv_reset()
             self.lv_get()
 
+        self._prev_oil = 0
+
         # Run
         for _ in range(20):
             try: