Free repair checklist
Change Your Highlander's Oil Right — Including the Second Drain Plug
Most quick-lube shops skip the second drain plug on the 2018 Highlander 3.5L V6 — leaving old oil behind. This free guide covers the full 6.4 qt 0W-20 procedure, both drain points, and how to do it right at home and
This checklist is a practical starting point. The DIY Mechanic System gives you a clearer path to diagnose the problem, plan the job, and complete the repair.
What this checklist covers
- 6.4 qt 0W-20 full synthetic spec — the exact quantity and grade Toyota specifies for the 3.5L V6
- Two-plug drain procedure most shops skip — get every drop of old oil out the right way
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