I am using Castrol transmax ATF+4 full synthetic in the 3rd gen transmission.

New to the site. But what do you guys think. Will I be ok?

 

Welcome to the forum

The ATF+4 specification product is intended for Chrysler transmissions.

Section 9 of your owners manual provides all the lubricant specifications for your truck along with other information, you should study it carefully.

It would be in your best interest to use the correct Toyota fluid.

 

ATF+4 is very good fluid but like mentioned already it’s spec’d for FCA vehicles.
I have no idea if it’s going to harm anything. Honda and Acura had some converter shudder problems a while back and the local dealers would buy cases of Mopar +4 to fix them.

 

this fluid claims to Meet a Toyota spec but I wouldn't put in the Transmission, It should be fine for the power steering though. I would use Toyota WS only in the transmission.
https://www.castrol.com/en_us/unite...fluids.html#tab_transmax-import-multi-vehicle

ATF+4 is a Chrysler spec synthetic ATF.

 

I wouldn't use it. I also wouldn't waste the money on Toyota WS. Plenty of solid aftermarket options.

 

If I was driving a Chrysler product, yes, ATF+4 is what I'd use, for a Toyota, really-REALLY bad idea.

 

Just my past experience using the 4 qt drain and refill method.....I would never use any aftermarket atf again, just the recommended ws toyota one. Using an aftermarket even if it claims it's compatible is a crap shoot. It can cause some very weird transmission shifting issues which usually do not show up till much later.

 

Modern vehicle ATF is one place where I really prefer OEM fluids.

The automatic transmission is just about the most expensive and fussy part of the vehicle to repair, the OEM didn't come up with the lubricant specs on a whim.

The dump it in and drive it days of the turbo 400, 727 & C6 automatics are past unfortunately...

 

The only reason you could dump anything in a 727 is because it hardly worked anyway. I have run some TH400s on John Deere hydraulic fluid to tighten up a converter though....

 

I had great results using Valvoline max life in my second gen. Did a drain and fill and pan service on my 2nd gen at 60k miles. Buttery smooth up to 130k when I sold it.

 

Not sure where you get your information, but the A727 is widely regarded as the strongest and most reliable 3-Speed automatic of that era; further more, both GM and Ford paid royalties to Chrysler to be able to use technology in their transmissions which was lifted directly from the A904 and A727 siblings.

 

I'm not sure what technology they lifted or for what series of transmissions but whole shitty band for every gear design wasn't used on the TH400 or TH350. I don't work on old Ford transmissions so I can't comment there. I've had the displeasure of working on just about every torqueflight though, they may have been great in the context of the time (IE everything else was just vastly worse), each drum on a TF has a very tiny working window for clutch clamping too so who knows maybe they're the candle that burns twice as bright. But in my experience they become slip masters faster than even GMs worst offerings... there's a reason Mopar stopped making transmissions and contracts everything to Aisin, ZF, and Allison now. The damn 727 haunted them through the 90s and early 2000s with the RE and RH series which even their own underpowered drivetrains could blow right through.

 

i agree. tried amsoil and idemitsu and went back to WS for this past drain and fill. feels so much better. going to do a couple more D&Fs with genuine WS fluid for peace of mind. they all say they are compatible with each other but idk man. stick with Toyota fluids for the transmission.

 

You're welcome to your opinion, but I must say, it sounds horribly biased. Personally I'd run the A727 over a TH400 any day of the week and twice on Sunday.

 

Agree to disagree, I may be biased but then so too are the people who employ my help. Installed a few adapter kits to run 4L80s in lieu of TorqueFlights. It's kinda GM or bust in the drag racing world when it comes to autos and high power.

 

Remember. Someone else Makes WS fluid for Toyota.

 

And that is relevant because? Whichever company makes Toyota's fill makes it to Toyota's specifications; just because Company A makes said fluid, does not in any way mean other ATFs from Company A comply with the requirements of Toyota's transmissions.

 

On my 2md gen I swapped out the ws for valvoline maxlife. 220k miles with no issues. However, the op went with something not compatable with tacomas. That's a no no imo

 

Because it's the same shit you can buy on the shelf at Walmart. It's not some liquid gold that's only specific to Toyota lol, nor is it specially formulated.

Just because it says Toyota on the box doesn't mean it's any better than the jug of ATF at Walmart.

It's the same shit with motor oil.

These are very basic transmissions, they don't require anything special when it comes to ATF. If you want to pay 3 times the cost to feel warm and fuzzy go for it but any reputable transmission shop will tell you it's a waste.

 

The word better always comes up in these conversations.

It isn't about better, it is about being the correct fluid - meeting the published specifications.

If you buy the OEM branded product you know it is the correct fluid.