Obviously for Jeep family of vehicles. I had some left after selling my wife's Renegade and since I'm changing the timing belt soon on the LS430, figured I'd top off my LS430 in the meantime since coolant will be replaced anyway with timing belt change.

But that makes me wonder - does anyone know if it's actually completely compatible with the Toyota coolant to begin with, aka fine to use it going forward? Basically I just figured they are both red/pink ethylene glycol antifreezes...

 

Mix it in with what's already in the car and let us know in a few years. If there is a chemical reaction such as gelling, acidity etc. then we'll know not to use it.

 

Mopar uses G40 or G05 spec coolants for the most part, do not use those in these cars since they are Asian spec that doesn't use silicates/phosphates in the same amounts. If you remove EVERYTHING out of the car you should be fine with it but that's not really a game I would play with your heater core in particular

 

Well, I figure I'll flush the coolant for the timing belt change anyway so it'll just be a matter of getting it mixed up a bit til then

 

Risking your cooling system and engine is worth the risk to save $20 in my opinion

 

Definitely not worth the risk. Why would you do that?

 

Genuinely wasn't aware that there were so many differences in coolants and was curious if it was just a marketing gimmick. Did a google for toyota coolant color (red/pink), knew the jeep one was also red, so figured I'd fill up the dry resevoir until the imminent timing belt change / coolant flush.

Glad I asked as I'll just stick with the Toyota stuff from now on as it seems despite the color sharing it could well have been OAT with HOAT?

 

I was being sarcastic. no one in their right mind would risk thousands of dollars / headaches / inconvenience /etc. to save $20 ... right ?

 

I don't know. A very trusted indie mechanic advised me to always, always, always use OEM Toyota coolant. In fact he strongly advised to just use all Toyota filters and fluids, period. These cars ask so little of you that you might as well do it.

 

Toyota coolant is stellar, I can't express that enough. I use it in classic cars, 60's and 70's it performs brilliantly. Zero build up or corrosion, nothing. System stays pristine. To be clear for any system with iron, brass and copper use Toyota LL for newer vehicles that went aluminum use Toyota SSL.
You'd think, but people do I've seen it. SSL mixed with Prestone universal has ugly results. Prestone does make a formula similar to SSL but I don't feel like doing a multi year experiment.

 

To be clear, I'm getting a coolant flush in less than two weeks with a timing belt change. This was a general question (and educational one at that) regarding whether coolants were all that different - apparently they are!

 

Like everyone else said, DON'T MIX them. If anything, why don't you simply fill up the reservoir with WATER instead of an incompatible formula of coolant? The amount you'd be diluting the system would be minimal. You're getting a flush in a couple weeks anyway, so you can refill it with the proper ratio then!

 

This is the correct advice. Water or the same exact coolant, nothing else

 

Distilled of course 👍