Originally Posted By: sayjac
Thinking of doing a power steering fluid service on 01 Tacoma, likely turkey baster, but most importantly wondering what to use.
Owners manual calls for Dex III but I'm wondering as that's an older spec if I have other options that might be better. Checking some new Tacomas and they also still seems to still call for Dex III.
So, should I use only Dex III something like Castrol Transmax Dex/Merc from AAP on sale in gallon size? Could I use a Dex VI fluid? Or even a power steering fluid?
I'd appreciate your thoughts. Thanks.
Dexron ATF works perfectly in a Toyota PS system if specified for that model. Any other type of PS or ATF fluid will result in inferior performance and reliability when Dexron is specified. The current version of Dexron is Dexron-VI, which is backward compatible with all previous Dexron specs (Dexron, Dexron-II, II-D, II-E, III, III-G, and III-H). However, a new Dexron-HP -- possibly PAO-based -- spec has just been announced and will be in the shelves in a year. Nevertheless, if you get Valvoline Dexron-VI, it's already fully synthetic, albeit probably Group-III-based, not PAO-based.