Raspy
Veteran Member
- Joined
- Dec 16, 2006
- Messages
- 1,656
- Location
- Smith Valley, Nevada
- Tractor
- NH TC29DA, F250 Tremor, Jeep Rubicon
If this coolant is water soluble it will pick up water on its own and become contaminated.
Whenever the engine warms up is sends some coolant into the overflow reservoir tank. As it cools, some coolant is sucked back into the engine from the tank. The overflow tank is not sealed from the atmosphere and will absorb some water from the atmosphere. It will become gradually more contaminated. Does that mean it has to be changed, and is therefore not "lifetime"?
There really is no such thing as 100% free of water, so it's just a matter of how much becomes a problem. That is the figure they need to address and the affect water has on reducing it's life, or it's performance, etc.
"Lifetime" is a misleading term that may not have any relevance. For instance, my truck has over 250,000 miles on it and is eight years old. I've never changed or added coolant, just added some water. The coolant doesn't owe me any more than that. There are other factors that might be more interesting. Like cost and toxicity.
Higher mileage claims without detailing what might be required to achieve those claims, and without any test data, is downright dishonest. When I spot a flag like that I lose interest in the other claims, and the company, because I think they're trying to manipulate me.
Whenever the engine warms up is sends some coolant into the overflow reservoir tank. As it cools, some coolant is sucked back into the engine from the tank. The overflow tank is not sealed from the atmosphere and will absorb some water from the atmosphere. It will become gradually more contaminated. Does that mean it has to be changed, and is therefore not "lifetime"?
There really is no such thing as 100% free of water, so it's just a matter of how much becomes a problem. That is the figure they need to address and the affect water has on reducing it's life, or it's performance, etc.
"Lifetime" is a misleading term that may not have any relevance. For instance, my truck has over 250,000 miles on it and is eight years old. I've never changed or added coolant, just added some water. The coolant doesn't owe me any more than that. There are other factors that might be more interesting. Like cost and toxicity.
Higher mileage claims without detailing what might be required to achieve those claims, and without any test data, is downright dishonest. When I spot a flag like that I lose interest in the other claims, and the company, because I think they're trying to manipulate me.