JffGRY706

so I see that they used 2 gallons of coolant when replacing water pump and timing belt @ 90,000 and replacing the coolant is on the schedule again at 100,000. How much coolant was NOT changed at the 90,000 service? How much coolant would be used on a full exchange? worth doing again or not? another stupid question, but better to ask....also I did my 1st drain and fill at 95,000 and as far as I know this was the 1st time for a transmission service. would the 100,000 service be too soon to drain and fill again or wait? I wish it had been done sooner, but so far no issues and it seems to be fine. they used 4 quarts of WS on the 1st drain and fill.

Lavrishevo

iTrader: (1)

Really about all the colant is replaced. Must of been 2 gallons of concentrate. If it's red and not looking rusty or dirty then you will be good for at least another 60k.

KING

iTrader: (1)

You got any leakage? Maybe they did a drain?

My reservoir was not full the other day, and I don't have any leakage which worried me a bit, but it never fell after I filled it up. I think 2 gallons is the reservoirs capacity, not sure though.

Transmission fluid shouldn't be changed every 10k. Most cars with perfectly functioning transmissions and ~140k miles on them never had their oils changed. It is advertised to be a lifetime fluid, even though I don't believe in that, my guess for a transmission fluid would be somewhere in between a 100k or 120k service. If you have more miles than that and your transmission isn't doing any funny tricks then don't touch it. If it ain't broke don't fix it rule falls here. Because it is harder on the transmission to accept a new oil change at a higher mileage.

Had this issue with a lot of 430 transmission where they ended up needing to be serviced after an oil change, they just start acting up. Plus, there are a lot of methods oil in a transmission can be changed. Drain and fill, or to add new amount of fluid every X miles. To mix up the old fluid with the new one.

I say good job for doing it now, and hopefully it will be good for another 100k miles.

writes123

Total Cooling system capacity 11.6 quarts. Should be Toyota SLLC PINK Pre-mixed (50/50) coolant.

Thus, they replaced 8 out of 11.6 quarts. That includes the majority of the coolant. There are 2 engine drain ***** that are pretty easy to access to drain the engine block directly. I suggest making sure that the thermostat and gasket have been replaced as well.

writes123

Also on ATF issue, no it's not too soon to do another drain and fill because the drain without a pan drop yield around 3.2 quarts. The total ATF capacity is 11.5 quarts. Most CL members will either never do the ATF D&F or opt for something around a 60k interval.

There's a dedicated ATF thread on this forum about various methods, pros and cons. I did 2 D&F upon getting the vehicle within 800 miles of each other and then later did a full transmission cooler line fluid exchange on my own. The fluid was very dirty upon exchange. I have noticed no changes in the transmission which is good since I wasn't noticing any problems with the old fluid before it was serviced. The common reason for fluid breakdown is heat. Also, the filter is a paper filter that is replaceable. If you want you can also add an additional transmission filter like a Magnefine filter on the transmission cooler return line. If you want to keep the transmission in optimal condition I recommend an fluid exchange, not a flush. The flush is where potential debris from the fluid will cause problems in the transmission. But that's all my personal opinion.

The mileage for the first ATF drain and fill was around 122k and and fluid exchange was at 128k. This is on an 05 UL.

Lavrishevo

iTrader: (1)

From what I understand it is a screen not a paper filter inside the transmission.

BradTank

It's not worth draining the coolant again and refilling with new coolant in that situation.

Theoretically, somebody could change the water pump and timing belt but drain the existing coolant and reuse it, but most people put fresh coolant in it instead (as they said they did in your case) so that takes care of that part of the service.

You can also buy an inexpensive coolant tester for a few dollars, it's a syringe looking vial with little colored ***** in it that show how much additive is left.

writes123

actually more of a fibrous strainer. not a paper filter but not a metal screen either. easy enough to unscrew and replace. also with pain drop you get more fluid out than a simple drain bolt also the filter holds a decent bit of ATF as well. may as well do a complete job if you're going to do it.

JffGRY706

thanks for the input. I had almost decided to skip the coolant, will do a 2nd drain and fill. only $165 at Lexus in Lubbock Texas. I could not wait for 120,000 to change spark plugs. did that last week and it really made a difference at 96,500. manufacturer does not think plugs last that long and neither do I now. transmission is last thing that I will have done at Lexus. just don't trust the "no dipstick" to check.

Lavrishevo

iTrader: (1)

Asian does not recommend removing the transmission pan unless there is a mechanical problem. I have done the drain and refill twice. I will continue to do it every 25k or so. If the seal starts leaking I will replace the filter. I am a fan of slowly introducing new fluid in. I have read many articles and opinions and I believe this is also why Lexus dealers mainly do drain and refills and not flushing. I spoke at length on this in the main thread. I am glad more and more people are realizing that there is no such thing as a "lifetime" fluid and are servicing this essential part of the car.

Tom57

Drain and fill is the way to go. Been doing it very 20K for the last 155K since 100K on the clock. (Every 4th oil change.) Easy and inexpensive preventive maintenance to extend life and performance of tranny.