A Few Coolant Related Questions

89FourRunner

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Firstly…

My 4Runner seems to consume about half a gallon of coolant every 6 months. Where this coolant is going, I have no idea. The motor oil usually looks pretty great when I drain it every 3,000-5,000 miles. No sign of coolant. The coolant also doesn't seem to ever be contaminated with oil either. No obvious leaks.

Every once in a blue moon when driving with the windows down I'll get that sweet smell that tickles the inside of my noise due to it's strength, and I suspect I'm smelling coolant haha. I could be wrong though. And it is so rare that I get a whiff. Again it's just half a gallon every 6 months or so.

I have called it "normal" for the entire time I've had the 4runner.

When I bought the truck from the original owner, it was running regular old ethyl-gly green coolant. Then when I had the timing belt, water pump, tensioners and thermostat done, (the only thing I didn't do myself - I had toyota do it when I first purchased the truck because they still had all oem stock parts available) TOYOTA switched me over to TOYOTA RED, Long Life coolant. A few of the older mechanics there said it would make my water pump happy and they had to flush out the entire system anyway.

The stuff is nearly $30 for a concentrated gallon though. Is there an aftermarket equivalent? Just curious.

Are many of you guys running TOYOTA RED in your 22re/3VZE engines or have you been staying true to the old green formula for $8 a concentrated gallon?
 
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I have the same coolant problem as you. I might have found the source(pinhole leak in the radiator on top and possible core runner). But even when I had a new(rebuilt because I wanted metal) radiator put in it displayed these symptoms but then I found the rad was leaking a bit again so who knows.

I always go with green and its what my 3vze always took and I replace the coolant every 2 years. However it does get "rusty" colored after about a year or so...no idea but no overheating and no puddles on the ground (or white smoke out the tail pipe).

Good luck
 
Zerez Asian is about the same price, and on the shelf at NAPA, so that's normally what I use. It's half the price, but it's all premixed, so the cost ends up being a push.

I'm told by multiple mechanics that the new "use in anything" green formula is ok for the Toyota and won't cause trouble if mixed with something else. I have no science of my own to back that up, just what I've heard.
 

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