Toyota Long Life Coolant - Toyota Nation Forum : Toyota Car and Truck Forums

dorman68 · 05-20-2010, 06:47 AM

I would like to know your experiences with and opinions on Toyota's long-life coolant. Your insight would greatly be appreciated. My concern is about leaving the original coolant in for 10 years or 100,000 miles. I know that the owner's manual and Alldata state that the original factory fill is good for 10 years or 100,000 miles. I seems too long for me. I am concerned about corrosion occuring in engine and other components as everything that is metal is aluminum on these Corollas. Would changing it now be premature? Has anyone experienced any issues with leaving their coolant for the time recommended in the manual? Thanks.

v8eaterWRX · 05-23-2010, 01:20 AM

I left it in our 06 until 100k. Came out just as clean as it was when new. I did a regular drain and 1 gallon fill and had no issue.

***PhatRoyale*** · 05-23-2010, 01:46 AM

No I wouldn't consider it premature.... whatever gives you peace of mind.

IIRC, I kept the original Toyota Red coolant in my 97 for almost 9 years (<100K miles) and it came out looking pretty brown.

No damage or corrosion to cooling system components though.

dorman68 · 05-24-2010, 09:20 AM

Thanks guys. Your insight is appreciated. I checked the coolant in the radiator amd in the reservoir and it looks like new, no debris or discoloration is visable. Thanks to you guys I feel comfortable leaving it go to the 100k mark.