Power steering fluid
From the owner's manual. This is the OEM spec for your car — your owner's manual is the final word.
We don't stock a reviewed power-steering fluid matched to this car yet. Search the fluid type on Amazon — and double-check the OEM spec on the bottle against your manual before you buy.
Find the right fluid on AmazonWhere this came from
- 2018 Toyota 4Runner Owner's Manual (OM35B46U) — 8-1 Specifications, Steering (corroborated by the identical fluid-check procedure in 6-3 Do-it-yourself maintenance, same document) — source