This video shows how to add bar and chain oil to the the Dewalt 60 Volt Electric Chainsaw

Link to this Dewalt 60v Electric Chainsaw (DCCS670X1)
https://amzn.to/3kXEvxU

Bar and Chain Oil
https://amzn.to/2G5xxb2

Link to an extra / new chain
https://amzn.to/2Gag9SH