I've been using it for years and it works fine.
My mechanic just switched my antifreeze to “Prestone yellow”. He said it’s for cars with high mileage (150k and higher) he said it’s softer on our old hoses and such! Car is running great.
i use regular peak coolant (prediluted). it works fine.
I've used Peak OET Blue in both Hondas and a Toyota for years...last time I got it, was 17 a gallon
i use regular peak coolant, works fine
I've only ever used Prestone which works great and has never been an issue.
I use prestones all weather,Great stuff
I run the Peak Final Charge Global red coolant. Less corrosive than the green stuff, and I haven’t had any issues running it.
Prestone does work, but Toyota uses RTV to seal the coolant passages between timing cover/thermostat housing and engine block. Prestone uses 2-EHA which has been shown to be aggressive on silicone, however it’s not uncommon to see leaks with the OE coolant that uses sebacic acid which is also a plasticizer. That said, I have a Sienna and LS430 that’s filled with Prestone, no coolant leaks… yet.
I don’t use peak anything. it’s actually not great coolant.
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