I have a 1996 Jimmy and recently replaced the thermostat. I know the raditor drain plug is not too far under the coolant recovery tank, if not that, you may simply have a hole in the tank. From what I've heard, I would use caution using stop leak products, but I am far from an expert. The question is--- is it leaking or just always low on fluid. A leak in the tank is possible but another possibility is the head gasket is allowing compustion pressure to get into the cooling system and blowing it out---check to see if there are bubbles inside the tank when the engine is running ---a sure sign the latter is happening. Jeep recovery tanks often have cracks and leak where the hoses atttach.
Yes, stop leak turns into a thick substance to plug any leaks, when it ends up in the overflow bottle it turns into sludge there.
your Toyota should have an overflow bottle to retain the antifreeze during normal operations. Unless it is overfull, I would be looking for a leak.
Head Gasket leak most likely.
A leak. You need to see where it is coming from.
The coolant will normally leak into the oil or into the cylinder
It means that you have a coolant leak. You need to have the system pressure tested for leaks.
You might check your overflow tank for coolant. It might be too full
Most commonly this is due to overheating or a blown head gasket. Overheating causes the coolant to expand, and rush into the resevoir, then overflow it. When cool, the coolant that remains will be sucked back into the engine. A blown head gasket can cause the coolant to enter the firing chambers of the engine then be blown out the tailpipe, or the compression can leak into the coolant area and push the coolant out, or allow the coolant to get into the oil pan.
Have it pressure tested, the intake gaskets have probably failed.
Could be an airlock. try bleeding the system until the heaters are hot. If it keeps doing it the i would suspect cyl head gasket. Hope this helps
you have to find where the leak is first.
hi make sure you have not over filled the expansion bottle as coolent will come from the overflow pipe also its worth checking the two small hoses attached to the thermostat housing unit hope this helps john