I need to add some anti-freeze to my ynamar engine. Hunter said to use dex cool 50/50. My hunter 36 has pink anti-freeze. All I can find is orange and green. Does anyone know who makes pink extended life anti-freeze.
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Bill,
Drain the pink stuff out. I'ts not designed for use but rather for lay-up. You can get Havoline Dex-cool at most auto parts stores. Pat McCartin Inland Marine Diesel Buford, Ga imd_ga@hotmail.com
Drain the pink stuff out. I'ts not designed for use but rather for lay-up. You can get Havoline Dex-cool at most auto parts stores. Pat McCartin Inland Marine Diesel Buford, Ga imd_ga@hotmail.com
Is it the REAL pink stuff?
If it's the real pink stuff that used to winterize your potable water, then do take it out. But, I think that what you see is the Dex-Cool that Hunter put in the engine when it was new. Dex-Cool is orange and changes a bit lighter when it is dilluted to 50/50. I quick test is to smell the stuff. You can tell the difference if you are familiar with the smell of either one.
If it's the real pink stuff that used to winterize your potable water, then do take it out. But, I think that what you see is the Dex-Cool that Hunter put in the engine when it was new. Dex-Cool is orange and changes a bit lighter when it is dilluted to 50/50. I quick test is to smell the stuff. You can tell the difference if you are familiar with the smell of either one.
Yanmar Coolant
Yanmar has tested and recommended Texaco products for their small(sailboat auxillary) engines. If you are in warranty, you would be well advised to stick with Yanmar's recommendations. Texaco Long Life Coolant regular and premixed 50/50 products (Code 7997 & 7998) are available in 1 gallon containers. The coolant system should be drained and flushed prior to using. (Including the hot water heater) Do not mix these products with anything other than water. Also acceptable is Texaco Havoline Extended Life (Code 7994). If you choose a full strength anti-freeze, cut if by 50% with preferably distilled water. Dex Cool (Hunter provided) is acceptable, but do not mix it with the above listed products. One of the primary reasons that Yanmar chose the Texaco products was the low silicone content. The standard automotive antifreeze over an extended period was causing failures in the Yanmar fresh water pump. In severe coolant overheating on the engine, the heat exchanger tube bundle is rendered useless because of high silicone content that fouls the tube bundle surfaces. Both casualties are expensive to correct and are not covered under warranty.
Yanmar has tested and recommended Texaco products for their small(sailboat auxillary) engines. If you are in warranty, you would be well advised to stick with Yanmar's recommendations. Texaco Long Life Coolant regular and premixed 50/50 products (Code 7997 & 7998) are available in 1 gallon containers. The coolant system should be drained and flushed prior to using. (Including the hot water heater) Do not mix these products with anything other than water. Also acceptable is Texaco Havoline Extended Life (Code 7994). If you choose a full strength anti-freeze, cut if by 50% with preferably distilled water. Dex Cool (Hunter provided) is acceptable, but do not mix it with the above listed products. One of the primary reasons that Yanmar chose the Texaco products was the low silicone content. The standard automotive antifreeze over an extended period was causing failures in the Yanmar fresh water pump. In severe coolant overheating on the engine, the heat exchanger tube bundle is rendered useless because of high silicone content that fouls the tube bundle surfaces. Both casualties are expensive to correct and are not covered under warranty.
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