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Equivalent coolants to Honda Long Life and Toyota Genuine

Are there brand name equivalent coolants to the ?Honda Antifreeze/Coolant? AND the ?Toyota Genuine Long Life Coolant??

How does one know, factually, one way or another? Whereas I can read the ingredients on the side of a Prestone Long-Life bottle, I can?t readily compare them with those of Honda?s or Toyota?s product.

The $14 and $17 cost for pre-mixed 50/50 one gallon containers cause me to wonder if the cost is justified. Here is what our owner?s manual says for the three cars we operate.

The ?96 Honda Accord (81K) owner?s manual says ?Always use Honda Antifreeze/Coolant. The cooling system contains many aluminum components that can corrode if an improper antifreeze is used. Some antifreeze, though labeled as safe for aluminum parts, may not provide adequate protection.? The language is silent on the use of silicate or borate free antifreeze.

?06 Honda Accord (15K) owner?s manual is even more specific. It says, ?Always use Honda Long-Life Antifreeze/Coolant Type 2. Later is says, ?If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines. Continued use of any non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail. Have the cooling system flushed and refilled with Honda antifreeze coolant as soon as possible.?

There is a bit a change in tack with respect to the recommendations in our ?02 Toyota Camry (64K). It APPEARS that it leaves the door open to long term use of other than Toyota branded coolant, though with caveat. The owner?s manual says, ?Use of improper coolants may damage your engine cooling system. Your coolant must contain ethylene glycol type coolant for a proper corrosion protection of your engine that contains aluminum components.

We have used ?Toyota Genuine Long Life Coolant? in your vehicle. In order to avoid technical problems, we strongly recommend using ?Toyota Genuine Long Life Coolant? or equivalent.?

By the way, what are silicates for, and what adverse effect to they have on the engine?

All thoughts appreciated.


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