1998 ES300 Transmission fluid change parts, process and requirements
08-15-20, 12:25 AM
#16
Lexus Champion
That's a good question, I don't have a good answer. Amsoil says:
Seems the more expensive stuff is designed for new transmissions, and is a better fluid. 50%+ better given the 50% higher price? For our cars probably not, it would be valuable in a new car with a high powered engine.
This sophisticated formulation provides outstanding performance and protection in the severe operating conditions of today’s most advanced transmission designs.
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NewSlang (08-15-20)
08-24-20, 09:50 AM
#18
Lexus Champion
The same amount that came out. 
I use a clear bottle that I wrote graduations on, or use an old motor oil container that has measurement marks. I can't stress this enough the fluid level needs to be exact, the only way to get it right is check with the engine running transmission hot. And I mean hot, drive for 30+ minutes.
BTW I am using the bottle to put the old fluid in, I add the exact amount that came out.
I use a clear bottle that I wrote graduations on, or use an old motor oil container that has measurement marks. I can't stress this enough the fluid level needs to be exact, the only way to get it right is check with the engine running transmission hot. And I mean hot, drive for 30+ minutes.BTW I am using the bottle to put the old fluid in, I add the exact amount that came out.
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NewSlang (08-24-20)
08-24-20, 02:36 PM
#19
Driver
Thread Starter
The same amount that came out. I use a clear bottle that I wrote graduations on, or use an old motor oil container that has measurement marks. I can't stress this enough the fluid level needs to be exact, the only way to get it right is check with the engine running transmission hot. And I mean hot, drive for 30+ minutes.
BTW I am using the bottle to put the old fluid in, I add the exact amount that came out.
I use a clear bottle that I wrote graduations on, or use an old motor oil container that has measurement marks. I can't stress this enough the fluid level needs to be exact, the only way to get it right is check with the engine running transmission hot. And I mean hot, drive for 30+ minutes.BTW I am using the bottle to put the old fluid in, I add the exact amount that came out.
08-24-20, 04:54 PM
#20
Lexus Champion
08-25-20, 08:42 AM
#22
Driver
Thread Starter
There is a filter that has been known to clog especially if a car sits for a long time.
edit- found the TSB from Toyota they say never to mix Dexron with T type fluid and that T fluid is not Dex compatible.
https://ravenol.co.za/wp-content/upl...E2%80%9399.pdf
edit- found the TSB from Toyota they say never to mix Dexron with T type fluid and that T fluid is not Dex compatible.
https://ravenol.co.za/wp-content/upl...E2%80%9399.pdf
08-25-20, 09:24 AM
#23
Lexus Champion
Unless you are super unlucky and some sap put T fluid in there. Do a drain/fill 3 times (better if you drop the pan once) and be done with it.
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NewSlang (08-25-20)
08-25-20, 10:06 AM
#24
Driver School Candidate
The owners manual calls for Dextron II or Dextron III for both the transmission and power steering in the 1998 ES300. I have used Valvoline Max Life full synthetic multi-vehicle ATF in my 1998 for several years with no issues. I would drain and refill about 3 times at 1,000 mile intervals and be done with it for at least 5 years. Don't overthink this, just do what you are comfortable with.
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