Pink coolant causes valley plate leak?
11-13-20, 12:33 AM
#1
Racer
Thread Starter
Pink coolant causes valley plate leak?
Where is he getting this info? He mentions the forums but I don’t remember reading anything about this.
11-13-20, 05:29 AM
#2
Mu understanding is a "few" folks that have the GSF and RCF are seeing this issue. I literally changed my coolant to Toyota Red yesterday. Who know what exactly causes this...but for $110.00....Im happy changing to Toyota Red.
airlaird
airlaird
11-13-20, 07:31 AM
#3
Racer
Thread Starter
I haven’t seen anything on the forums that RCF and GSF have this issue. Where did you read this? Link please.
11-13-20, 11:40 AM
#5
Racer
Thread Starter
I haven’t heard any new gen 2URGSE engines (RCF,GSF,LC500) have this issue...but maybe it’s just too new? I noticed a valley plate on my 08 ISF at 80k miles.
11-13-20, 12:55 PM
#6
EDIT: Just stick some of the sealant in a jar full of pink coolant for a few years and see if it breaks down
(this is a joke btw)Check out this article https://garagedreams.net/products/to...hich-is-better
Last edited by Yri; 11-13-20 at 01:10 PM.
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11-13-20, 01:56 PM
#8
Well thats slightly disturbing.
Pink toyota coolant is not meant to deal with copper or lead radiators, but red coolant is. Look at the ingredients list between the two... Toyota Pink Super Long Life Coolant:
Pink toyota coolant is not meant to deal with copper or lead radiators, but red coolant is. Look at the ingredients list between the two... Toyota Pink Super Long Life Coolant:
- Water (7732-18-5)
- Ethylene Glycol (107-21-1)
- Diethylene Glycol (111-46-6)
- Sebacic Acid (111-20-6)
- Potassium Hydroxide (1310-58-3)
- Ethylene Glycol (107-21-1)
- Diethylene Glycol (111-46-6)
- Water (7732-18-5)
- Organic Acid Salt (532-32-1)
- Hydrated Inorganic Salt (1310-58-3)
I am certainly no chemist or anything, but it seems like the red stuff has more glycol. Maybe lobux could give some insight.
11-13-20, 03:05 PM
#9
Racer
Thread Starter
11-14-20, 10:49 AM
#11
Racer
Thread Starter
I did a valley plate thread on the RCF forum months ago. Also lots of info (and known cases) on the ISF forums. I was one of them. Here are the cliff notes:
1. Make sure the coolant level is at the high level marker indicated on the reservoir before the first start up of the day. Under no circumstances should it be at the low line. That is a good indicator that coolant level is low. If the engine is warm/hot and the coolant is just at the high line then it will be low once it’s cooled. I used to make a photo log and check mine every week.
2. The leak starts slow...my leak on my 08 ISF started as filling the reservoir every 4 months from low to high for 2 years then worsened from there. For many 2UR guys without this problem, they don’t have to fill the coolant for years!
3. Mine started at around 65k miles. But it can vary. Some don’t experience it until 80k, 100k,...some experience it earlier.
4. This should be covered under your power train warranty which is 6 years or 70k miles. If you are out of warranty the dealer charges between $1500-$2500. My dealer charged my aftermarket warranty $2,100 (including broken injectors damaged upon repair). A good independent shop with experience on this should be able to do it for less.
5. The car still ran strong with the leak. Obviously I don’t advise to keep running with it and tracking it with this condition but the leak was so minor it was still performing well.
6. You can confirm you have a leak where the coolant puddles at the low section of the valley. All you need is a borescope ($20 at amazon) to check. I made a YouTube video on where to look. It’s on the first driver side intake runner.
7. Link to the ISF thread:
https://www.clublexus.com/forums/is-...ley-plate.html
1. Make sure the coolant level is at the high level marker indicated on the reservoir before the first start up of the day. Under no circumstances should it be at the low line. That is a good indicator that coolant level is low. If the engine is warm/hot and the coolant is just at the high line then it will be low once it’s cooled. I used to make a photo log and check mine every week.
2. The leak starts slow...my leak on my 08 ISF started as filling the reservoir every 4 months from low to high for 2 years then worsened from there. For many 2UR guys without this problem, they don’t have to fill the coolant for years!
3. Mine started at around 65k miles. But it can vary. Some don’t experience it until 80k, 100k,...some experience it earlier.
4. This should be covered under your power train warranty which is 6 years or 70k miles. If you are out of warranty the dealer charges between $1500-$2500. My dealer charged my aftermarket warranty $2,100 (including broken injectors damaged upon repair). A good independent shop with experience on this should be able to do it for less.
5. The car still ran strong with the leak. Obviously I don’t advise to keep running with it and tracking it with this condition but the leak was so minor it was still performing well.
6. You can confirm you have a leak where the coolant puddles at the low section of the valley. All you need is a borescope ($20 at amazon) to check. I made a YouTube video on where to look. It’s on the first driver side intake runner.
7. Link to the ISF thread:
https://www.clublexus.com/forums/is-...ley-plate.html
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JimmyRX350 (01-19-22)
11-14-20, 03:18 PM
#12
I am still pissed, I thought this had been remedied on the RCF/GSF. From what it sounds though we have not heard of any RCFs with the condition yet? Let's hope it's more rare.
11-14-20, 06:05 PM
#13
Racer
Thread Starter
At least now this is something we know to look out for rather than a surprise.
After 2 years with a valley plate leak my car ran fine because I always topped it off. Also the leak starts off very slow. I only had to refill mine every 4 months (I drove 1,000 miles a month). Some people had it so bad they had to refill each month. I had no issues of overheating and the car still pulled like a rocket. Having said that...it should be taken care of.
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CinFulxgs (11-14-20)
11-15-20, 10:09 AM
#14
A valley plate leak would and should not cause a performance decrease OR overheating (unless you run all of the coolant out of it). Generally, its an issue that could be let go for quite a while, but sooner or later you should tackle it. It makes quite the mess and generally takes some time to fix.
We will have to wait and see a few more years and see if any of these problems keep arising in other RC F's and GS F's. Hopefully they started putting more sealant in the newer cars, and hopefully the issue is only one of minority. There again, we must wait.
We will have to wait and see a few more years and see if any of these problems keep arising in other RC F's and GS F's. Hopefully they started putting more sealant in the newer cars, and hopefully the issue is only one of minority. There again, we must wait.
11-16-20, 08:56 AM
#15
I just swapped the OEM pink to red coolant in my 16 GS-F with 46k miles as a preventative measure. Mechanic assure me that it is not leaking yet, for 100 dollars or so I thought why not...