High Mileage Coolant Service

[04UZJ100]

How are you all servicing your coolant over 100k miles? Are you doing radiator drain and fills on some interval or something more aggressive?

I did a radiator drain and fill at 90k and again at 155k. I'm thinking I want to do another drain and fill at 170k and continue to do that every 25-30k. Thoughts from those with >150-200k miles?

 

[Sandroad]

I'm only at 115,000 miles, but I did a complete change (not just radiator) with the 90K service and from now on I plan to follow what's in the owner's manual and will also do another complete change at 180K.

 

[04UZJ100]

Anyone have a DIY method for draining the entire system?

 

[vipergrhd]

I'm not sure about this but I think most Toyota engine came with a drain petcock on the engine block on V type engines have them on both sides. I would run clean water to flush it if the drain is present then add Toyota red and mix with distilled water,it should last for more than 100k as long the mixture stays the same IMO.

 

[04UZJ100]

I'm not sure about this but I think most Toyota engine came with a drain petcock on the engine block on V type engines have them on both sides. I would run clean water to flush it if the drain is present then add Toyota red and mix with distilled water,it should last for more than 100k as long the mixture stays the same IMO.

It takes the pink SLLC. Because it's glycol based, there should be no deposits which makes me think a water flush isn't necessary.

 

[vipergrhd]

^^^^ Are you talking about the 50/50 ready to pour? Is that the same as the Hybrid coolant? I personally don't like the 50/50 mix I would rather have it more than 50/50 anyway.

 

[04UZJ100]

^^^^ Are you talking about the 50/50 ready to pour? Is that the same as the Hybrid coolant? I personally don't like the 50/50 mix I would rather have it more than 50/50 anyway.

No I'm talking about premixed pink Toyota coolant.

 

[04UZJ100]

Bump.