WS stands for World Standard. Aisin / Toyota WS World Standard Automatic Transmission Fluid (ATF-0WS) Aisin is the Toyota subsidiary that makes the transmissions and many other parts in the RAV4. Part no 08886-02305. service dept also says they use WS but they are advertising it as FULL Synthetic. Specifically formulated for use in Toyota sealed automatic transmissions. Answer ...No, We know that synthetic tends to flow better when its cold, that it resists shearing better than conventional, that it protects better under high heat conditions, and that in general it usually has a lower NOACK and a higher film strength. Mobil ATF WS is designed to meet the service fill requirements for many Japanese designed vehicles, and is recommended for use in transmissions requiring fluids that meet JWS 3324 requirements. Get it as soon as Thu, Dec 31. I wouldn't use anything else in one if those transmissions, too many issues after having it serviced elsewhere. I am running MaxLife and I have no problems. No Toyota T-IV in 03, 04 was first for WS. Toyota 00279-000T4-0 Lexus ATF Automatic Transmission Fluid. update: I called their parts dept but they only sell WS ATF. RAV4.3 Third Generation (2006-2012 Models), https://r56hs.com/2016/02/22/2011-rav4-v6-awd-automatic-transmission-flush/, Aisin / Toyota WS World Standard Automatic Transmission Fluid (ATF-0WS), http://www.luisa.com.gt/sites/default/files/maxlife_atf.pdf, https://www.amsoil.com/lit/databulletins/g3190.pdf, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada, rav4world.com is an independent Toyota enthusiast website owned and operated by VerticalScope Inc. A couple of my old UOAs of Toyota factory fill had a dose of zinc that is not ueed in Dexron ATFs but is common with hydraulic and PSFs. Toyota's World Standard (WS) ATF is one of the newest generation of ATF on the market. It' my understanding the A750 5spd transmission was first introduced in the 2003 Land Cruiser/LX470 USA. Could be slight changes between the years but engine/trannie same in both. Brown and slightly burnt smelling. First, I tried regular ATF dexron fluid for a few months to see what happened. Idemitsu 30040096-95300C020 ATF Type TLS-LV (WS) Automatic Transmission Fluid for Toyota/Lexus/Scion-5 Quart. MaxLife™ Multi-Vehicle ATF : Product Catalog - Valvoline® Genuine Toyota Part # 00289ATFWS (00289-ATFWS, 0888602305) - Genuine Toyota Automatic Transmission Fluid-WS. Thank you for clarify on the WS acronym. tyguys4 does your work ever swap WS ATF with full synthetic and is it Toyota brand? many websites suggest WS isn't full synthetic according to data sheet. Reduced oil waste through less frequent oil changes. Toyota WS compatible and synthetic. Yeah, I figured I can tackle this on my own. Void where prohibited. Limit one coupon per person. I found it in Amazon.com. I really think it needs it but I don't know if I should switch to full synthetic? The WS flush at other dealer is $130. New comments cannot be posted and votes cannot be cast, Press J to jump to the feed. What they're offering isn't too bad of a deal and long as they use Toyota WS fluid it won't hurt anything. two notes on ATF flush. Toyota has upgraded the ATF specifications over the years; the newer fluids are not always backward compatiblewith previous fluids. Again, don't care about the fluid, or for that matter, how you do it ... the bottom line is for people to realize that just dropping 3 qts is NOT changing your ATF ... there's still 8 qts inside there so it's still plenty dirty. T-IV initially replaced Dexron III as the transmission fluid of choice for Toyota and Lexus automatics starting in the early 90s. Both fluids are synthetic but that fact alone isn't the reason they are compatible. most Gen 3's have 11 qts (or so I've been told ... and verified in mine). This anything but scientific but we have an '11 and '17 Camry. They use Penrite products – for this, Penrite Multivehicle fully synthetic ATF LV. RAVENOL ATF T-WS Lifetime fulfils the latest transmission oil specifications for sequential automatic transmissions of Toyota and Aisin Warner. Content on rav4world.com is generated by its users. Such an easy upgrade! Compatibility with synthetic rubber seal materials Applications. RAVENOL ATF T-WS Lifetime is recommended for sequential automatic transmissions of Toyota and Aisin Warner. I use them on my other vehicles with factory WS filled A750F transmission. All it is the internet 's largest Toyota RAV4 SUV and EV online forum community and would. To 2nd synthetic ATF and is it wise to let the dealer it... Use Penrite products – for this, Penrite Multivehicle fully synthetic ATF LV suggest. 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