[jordan6543]

I just did a transmission drain and fill on my 98 limited, not realizing the dealership had given me the WS ATF. I’ve driven about 50km with it in and haven’t noticed any change in the performance of the transmission. Will this cause any problems if I leave it in?

[HiluxSurf SSR-G]

If the WS bottle says it's compatible with Dexron-II or III or IV, then you're good to go.

[jgue467]

WS (world standard) is meant for trans that operate at higher temps than 3rd gens, so it should do very well.

Edit: stand corrected as per wiki link below!

[HiluxSurf SSR-G]

according to the link below, it's not backwards compatible with previous atf:


Toyota Automatic Transmission Fluid - Wikipedia


perhaps there are differences in the viscosity values. just like the D-VI not being compatible with D-II/III/IV. D-VI has lower viscosity compared to the previous ones

[Bad Luck]

Originally Posted by jordan6543

I just did a transmission drain and fill on my 98 limited, not realizing the dealership had given me the WS ATF. I’ve driven about 50km with it in and haven’t noticed any change in the performance of the transmission. Will this cause any problems if I leave it in?

Technically speaking Toyota WS is not backwards compatible with Dexron III (what our transmissions use). That being said if you've had it in this long then you're probably okay to keep running it. If it were me I would do several drain and fills with a Dexron III compatible transmission fluid or a DIY flush.

EDIT: Toyota WS has a recommended fluid change interval of 60K miles for moderate to heavy use (essentially anyone that doesn't do highway commuting 90% of the miles).

[T4R2014]

Get it out of there. This is a thinner fluid than Dexron.

[FordF150]

Originally Posted by jordan6543

I just did a transmission drain and fill on my 98 limited, not realizing the dealership had given me the WS ATF. I’ve driven about 50km with it in and haven’t noticed any change in the performance of the transmission. Will this cause any problems if I leave it in?

I'm not sure if the WS is backward compatible with your 1998.

I think you will be ok with WS, but as a few dealers what to do.

[jbtvt]

I sure wouldn't chance it. Might not make a difference this year or next but will almost certainly decrease the lifespan vs using the correct fluid. Do a flush
DIY: Full Flush for Automatic Transmission | Tacoma World

[leonp24]

Originally Posted by FordF150

I'm not sure if the WS is backward compatible with your 1998.

I think you will be ok with WS, but as a few dealers what to do.

Don't trust FordF150-captsolo. Get the right fluid in there as soon as you can.

[Bad Luck]

Originally Posted by FordF150

I'm not sure if the WS is backward compatible with your 1998.

I think you will be ok with WS, but as a few dealers what to do.

Do you have a 3rd gen 4Runner? Have you ever owned a 3rd gen 4Runner?

[firebirdguy]

Originally Posted by Bad Luck

Do you have a 3rd gen 4Runner? Have you ever owned a 3rd gen 4Runner?

nope! hes lost, posting in the 3rd gen section telling people its ok to use WS in a 3rd gen... just like he thinks T-IV is what came new in a 2005 5 speed 4th gen!

[jordan6543]

Thanks for the responses guys. I'm going to do a DIY flush as soon as I can.

[gamefreakgc]

Originally Posted by jordan6543

Thanks for the responses guys. I'm going to do a DIY flush as soon as I can.

To further complicate this thread, I've noticed better shifts and overall operation switching to a full synthetic ATF. I used Royal Purple but Redline synthetic is also very good.

[Endlessblockades]

Originally Posted by gamefreakgc

To further complicate this thread, I've noticed better shifts and overall operation switching to a full synthetic ATF. I used Royal Purple but Redline synthetic is also very good.

When you go full synth do you cycle it in doing drain and fills? I know they they can co-exist - just wondering.

[gamefreakgc]

Originally Posted by Endlessblockades

When you go full synth do you cycle it in doing drain and fills? I know they they can co-exist - just wondering.

I did do a drain and fill several times so you are right, it's not 100% synthetic. I did the math at one point and it's something like 70% synthetic after 3 fills as you cannot completely drain the old fluid out. I did a series of 3 drain and fills using a total of 12 quarts. And yes, by the last time I was draining out relatively new fluid and tossing it, I do realize that.