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My 2016 ES350 hit 50,000 miles this week. I did my regular 5,000 mile oil change and decided to replace the coolant.
I bought the concentrate along with distilled water. Since the battery is about 5 years old, I also had the parts store do a free battery and charging system test, after all winter is coming.
The drain was easy. It took a bit of time to do the bleeding. I have a nice spill free funnel and a few feet of 1/4" tubing for the bleeding process.
I filled the system with coolant till it came up the hose from the bleeder nipple, and then maintained 1/3 up the funnel. I started the car with the A/C shut off, heat on high, low fan speed, and dash vent only. Once the engine warmed up a bit I put a piece of wood between the seat and gas pedal and brought it up to 2,200 rpm. I kept an eye on the fluid level and eventually the fan kicked in showing the thermostat opened. It took quite awhile till the coolant ran up from the vent hose into the funnel. I closed the bleeder valve, shut down the engine, plugged the funnel and removed it installing the cap. I put the excess from the funnel into the overflow tank and brought it up to the full mark.
If your a diy person I highly recommend getting one of the funnel kits. I would not want to do this with out one. In the picture you can also see I put a critter screen over the air intake. Wile I've never had a problem I have seen what they can do to air filters at my friends shop.
While I can understand brand loyalty, Peak meets all the standards as required by Toyota Lexus.
Only fluid I would defer to Toyota for is perhaps ATF.
From the manual:
• “Toyota Super Long Life Coolant” or a similar high quality ethylene glycol-based non-silicate, non-amine, non-nitrite
and non-borate coolant with long-life hybrid organic acid
technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with 50%
coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with 55%
coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Peaks formulation:
PEAK® ORIGINAL EQUIPMENT TECHNOLOGY™ ANTIFREEZE + COOLANT for ASIAN VEHICLES - RED/PINK is an ethylene glycol-based antifreeze/coolant specifically developed for use in any Asian vehicle requiring a red or pink phosphate-enhanced organic acid technology (POAT) formulation. It contains high-quality organic acid corrosion inhibitors and is free of borate, nitrite, silicate and amines.
The one problem some 2GR's can suffer from long term is a Head Gasket leak. The Toyota fluid has some additives that were supposed to help it reduce the contamination and acid build up. Seen a lot of confusion about what Peak actually has or does not have and has? I recommend in a Toyota Lexus using the Factory fill stuff.
On your Transmission comments, you may not know that Valvoline Trans fluid and, Idemitsu are better Trans fluids. They are truly Full Synthetics. The Toyota WS is well known to Not actually be Full Synthetics. Look it up for yourself.
The Car Care Nut also has a good DIY on this video also and those funnels are a must. For the little the dealer charges, I let them do it. I hate dealing with messy fluids and burping a 2GR is kind of a pain. I've gotten lazier as I get older. I also recommend Toyota coolant only.
On your Transmission comments, you may not know that Valvoline Trans fluid and, Idemitsu are better Trans fluids. They are truly Full Synthetics. The Toyota WS is well known to Not actually be Full Synthetics. Look it up for yourself.
^^ This is very true and worth stressing; valuable comment.
Valvoline MaxLife and some other fluids are very superior to Toyota WS, and provide more protection, longer. WS (aka ExxonMobil JWS3324 - it is a Mobil-made fluid) is known to break down prematurely from shearing. This was a really big problem in Toyota truck and higher HP Toyota/Lexus vehicles when it first came out. MaxLife really built a following because of WS’s weaknesses.
The one problem some 2GR's can suffer from long term is a Head Gasket leak. The Toyota fluid has some additives that were supposed to help it reduce the contamination and acid build up. Seen a lot of confusion about what Peak actually has or does not have and has? I recommend in a Toyota Lexus using the Factory fill stuff.
On your Transmission comments, you may not know that Valvoline Trans fluid and, Idemitsu are better Trans fluids. They are truly Full Synthetics. The Toyota WS is well known to Not actually be Full Synthetics. Look it up for yourself.
I think you are confusing things regarding Toyota Coolant. The specified formulation, which this brand of Peak has, is what reduces the problems. Toyota does not make it's own special formulation. That is why you do not use the Peak Asian car formulation that is Blue or Green.
As far as the transmission fluid, I intend to do that in the spring. I have used the Valvoline in my 2005 Corolla, and may use the Idemitsu or Valvoline synthetic. I have to look into it a bit more.
I think you are confusing things regarding Toyota Coolant. The specified formulation, which this brand of Peak has, is what reduces the problems. Toyota does not make it's own special formulation. That is why you do not use the Peak Asian car formulation that is Blue or Green.
As far as the transmission fluid, I intend to do that in the spring. I have used the Valvoline in my 2005 Corolla, and may use the Idemitsu or Valvoline synthetic. I have to look into it a bit more.
I'm not confused about test and those who have used Peak in Asin car over the years including in thier Toyota and Lexus cars. The Acid and contamination test results in time and results that is it was slimly in the Coolant systems, is why I say what I say. Use what you want, I just recommend that the Toyota Lexus brand Coolant fluid is best to use in a Toyota Lexus.
In regards to the Trans fluids no need to post you tube Theory's with out test or actual comparison use. It's a fact that Toyota only branded the WS Trans fluid as Full synthetic and claimed Lifetime to save Millions in EPA cost.
AI: "Toyota WS fluid is not considered full synthetic, despite claims by some third-party sellers; it is made from a conventional base stock, often described as a Group III hydrocracked fluid, and has a lower flash point than some older formulations. Because it's not full synthetic, its performance can degrade faster under high heat compared to a genuine full synthetic or some aftermarket fluids, though it can still be a suitable option, especially if you plan to change it regularly."
I'm going to start another thread on ATF. Back to coolant.
jgscott, I have watched the car care nut videos over the years. I think you missed something. Yes Peaks formula for my car does go acidic over time. The car care nut made a video a few years back regarding the Toyota coolant, which does the exact same thing as the Peak because it is the same formula. And yes one of the important issues with the coolant, Toyota or Peak is the head gasket.
Lexus coolant specs"
“Toyota Super Long Life Coolant” or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology.
I don't don't believe in any additives except fuel system cleaner in the gas. I know many oil additives can have a negative effect, by upsetting the chemistry of the oil. It is possible that cooling system additives can cause issues but I can't say if your additive is good or bad. I would avoid it from a quick look.
If adding some cheap additive would be beneficial - don't you think it would already be included in the factory coolant?
And remember - manufacturers are on the hook if anything happens to you engine during the original and extended warranties. The additive manufacturers don't guarantee zilch.
New Coolant
