- Thread starter
- #21
Who offers aftermarket WS option?
Drain and fill tranny oil for '05
- Thread starter tsarte
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Who offers aftermarket WS option?
- Thread starter
- #23
thanks for the response sc4hundred
Redline D6
Amsoil ATL
SuperTech Dexron VI
Valvoline Maxlife
The WS is showing itself to be fairly weak in UOA. OTH Dexron VI is a strong performer and similar in specification so going to a DexVI product recommended for WS may be a good move. Only concern is the friction modifiers.
From Toyota
"If a vehicle with a transmission filled with ATF WS is replenished with other type of ATF, the vehicle might not start off at extremely low temperatures. However, it will start off after it has been warmed up for a few minutes."
I expect this is the reason for the change in fluid from T-IV to WS
"The T-IV type ATF (Automatic Transmission Fluid) of the A750F automatic transmission on the ’03 Land Cruiser has been changed to the WS type on the ’04 Land Cruiser. The reduced viscosity in the practical operating temperature range of the ATF WS enables to reduce drag loss and improve fuel economy.
The ATF WS is not interchangeable with other types of ATF (ATF type T-IV, or D-II). "
From another spot
The following symptoms will occur if non–WS ATF is put into a WS–compatible
automatic transmission:
Non–WS ATF has a higher viscosity. Because of this, response to changes in
fluid pressure decreases, lengthening shift time, causing shift flare.
When the fluid temperature is low, (approximately –40°F [–40°C]), air can enter the oil pump causing cavitation resulting in low fluid pressure.
Fuel consumption increases.
"If a vehicle with a transmission filled with ATF WS is replenished with other type of ATF, the vehicle might not start off at extremely low temperatures. However, it will start off after it has been warmed up for a few minutes."
I expect this is the reason for the change in fluid from T-IV to WS
"The T-IV type ATF (Automatic Transmission Fluid) of the A750F automatic transmission on the ’03 Land Cruiser has been changed to the WS type on the ’04 Land Cruiser. The reduced viscosity in the practical operating temperature range of the ATF WS enables to reduce drag loss and improve fuel economy.
The ATF WS is not interchangeable with other types of ATF (ATF type T-IV, or D-II). "
From another spot
The following symptoms will occur if non–WS ATF is put into a WS–compatible
automatic transmission:
Non–WS ATF has a higher viscosity. Because of this, response to changes in
fluid pressure decreases, lengthening shift time, causing shift flare.
When the fluid temperature is low, (approximately –40°F [–40°C]), air can enter the oil pump causing cavitation resulting in low fluid pressure.
Fuel consumption increases.
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All the fluids I listed above are low viscosity fluids similar to WS and should not have any viscosity related issues.
I had my 2004 trans serviced by the Lexus dealer at 50K miles just to be conservative. Will do it again at 100K miles. Cost $120 and I never have towed with my LX but I want to keep it in top shape.
- Thread starter
- #28
I did the drain and refill myself. I was able to drain about 2qt+2.5cups. Since I had the full Slee belly pans I had to remove the intermediate plate. I noticed that the diagrams had a "WS" on the fill plug and so I was finally able to figure that out 
. I picked up a pump at a local auto store and used that to transfer the new fluid into the tranny. overall it was an easy task but since it was my first working with this pump I made a big mess.
btw, I did not replace the fill and drain gaskets. I will be doing this all over again this saturday this time with new gaskets.
I will also be contacting cruiserdan to figure out the parts and logistics for the '03 pan swap. I'll keep you guys posted
. I picked up a pump at a local auto store and used that to transfer the new fluid into the tranny. overall it was an easy task but since it was my first working with this pump I made a big mess. btw, I did not replace the fill and drain gaskets. I will be doing this all over again this saturday this time with new gaskets.
I will also be contacting cruiserdan to figure out the parts and logistics for the '03 pan swap. I'll keep you guys posted
uHu
Bridgeburner
How was the old oil? Smell? Color?
(& milage, towing, history)
(& milage, towing, history)
About $250 retail I think
- Thread starter
- #31
The old oil did not smell unusual or burnt. Actually I take it back, it was unusual 'cuz it did not smell like tranny oil anymore.
It was definitely very dark - black. The drain plug did not have any residue stuck to it but I'm not sure now if it was magnetized at all.
My truck has about 105k on it and I bought it in '08 with 63K. I did not tow with it but the PO could have. It was an executive lease from a logging company and was dealer maintained regularly in Santa Monica.
That doesn't sound good at all! especially at only 105K. Not much of a "Lifetime". I think I'd be planning a way to get the rest of the fluid out and replaced.
What was the color and smell of the new WS ?
Usually the tranny pans have large magnets in them so not having a magnet on the plug is no problem.
Anthony.L
Looking for the end of the road...
Can you please report back with the total cost of the 03 pan swap once you hear from CDan? I'm very curious, and I'm sure there are others as well. Bonus if you can post the parts list as well.
Thanks!
the FJC had similar setup....many found dark and dirty tranny fluid at 50k when they changed it to just be safe after relocating vent tubes up higher to keep out water...as they would stick open and suck in water if there was grit or sand in them. At the time only Toyota had WS rated fluids but was still better for them to do it as if you follow the manual it is quite involved to drain and swap.
Amsoil has the WS rated fluid as well and quite a few do their own depending on who you talk to but the general consensus was to swap out the fluid and replace it no matter what Toyota said it was good for as too many were finding moisture and very black fluid when they checked.
Relocating vents was a big help for many.....myself included. I have not looked at venting setup on 100 but can assure you it will be one of my first mods.
Amsoil has the WS rated fluid as well and quite a few do their own depending on who you talk to but the general consensus was to swap out the fluid and replace it no matter what Toyota said it was good for as too many were finding moisture and very black fluid when they checked.
Relocating vents was a big help for many.....myself included. I have not looked at venting setup on 100 but can assure you it will be one of my first mods.
Trans fluid only needs to be replaced if it gets over heated. Problem if you are not the original owner how do you know if it was over heated. Also if the 100 series is used to rock crawl I would change fluid after every outing.
The additives do get consumed over time and the fluid can be contaminated by the clutch wear material. But you are right that the hardest thing on the fluid is too much heat. Black fluid is not a good sign.
uHu
Bridgeburner
When changing the pan of your AT in order to get a dip-stick, how would you know the correct level for the ATF? Would you assume that the T-IV level for the T-IV AT woyuld be correct also for WS in the WS AT?
There is already a overflow drain in the case, and a fill plug. Biggest problem is getting the correct temperature in there, and that will be the same w or w/o a dip-stick
- Thread starter
- #38
that's my plan along with some pix.
Will not be hard to determine when you have both pan to compare...measure the drain stem and compare it to dip stick pan put together prior to install.
