For those who might not be members of TDP, Racor posted yesterday evening that they are coming out with a new DMAX additional filter system. They expect to have something in 6 to 8 weeks. The text (including some additional comments on rusty filters and additives) is below:
Quote by Racor...
I have not heard or seen any warranty issues on "pre-rusted" elements. I would think that at least one rusty can would get back through GM return system for our inspection. Whenever you have metal surfaces, painted, coated or otherwise, there is always the chance that you could get rust and corrosion under humid conditions.
If the corrosion is a few spots found on the inside (dirty side) of the can, it's really not that serious. But then I'm talking here to serious truck owners where nothing short of ultimate 100% protection is the requirement. Therefore, I would suggest trading the filter in for a new one.
Most of the returns we see involving corrosion, contain rust that wasn't from the Racor filter. Of course if a lot of water is present in the fuel, and it just sits in the bottom of the can month after month, you will get corrosion and rust eventually. One more reason to drain water from the filter weekly, dash light or no dash light.
Some people here in the forum seem to think that emulsifiying water in the fuel system with additives will avoid corrosion. But there is some evidence that those types of additives allow water to bypass the filter and enter the injection system. There the water corrodes sensitive parts. Even Bosch is worried about that. A water de-emulsifier would be a better choice. Get the water out before the injection system.
Racor is coming out with a R60 kit to put ahead of the OEM filter. With two filters, the primary can remove bulk water, asphaltines, and quite a bit of solids. The OEM secondary can then remove the rest of the water and take another shot at the particles. The particle count difference can be dramatic. Give us 6 to 10 weeks; the electronics are difficult to match to the DMAX system. That's the hold up. Expect a heater kit too.
While were talking about particle counts, you might want to put a filtered air breather on your fuel tank. If you are in a dusty environment, the tank vent is open to all that. I don't know if that will cause odd behavior in the fuel system, but it's worth looking at. Don't let the particles in in the first place.
End of Quote...Edited by: Roegs
Quote by Racor...
I have not heard or seen any warranty issues on "pre-rusted" elements. I would think that at least one rusty can would get back through GM return system for our inspection. Whenever you have metal surfaces, painted, coated or otherwise, there is always the chance that you could get rust and corrosion under humid conditions.
If the corrosion is a few spots found on the inside (dirty side) of the can, it's really not that serious. But then I'm talking here to serious truck owners where nothing short of ultimate 100% protection is the requirement. Therefore, I would suggest trading the filter in for a new one.
Most of the returns we see involving corrosion, contain rust that wasn't from the Racor filter. Of course if a lot of water is present in the fuel, and it just sits in the bottom of the can month after month, you will get corrosion and rust eventually. One more reason to drain water from the filter weekly, dash light or no dash light.
Some people here in the forum seem to think that emulsifiying water in the fuel system with additives will avoid corrosion. But there is some evidence that those types of additives allow water to bypass the filter and enter the injection system. There the water corrodes sensitive parts. Even Bosch is worried about that. A water de-emulsifier would be a better choice. Get the water out before the injection system.
Racor is coming out with a R60 kit to put ahead of the OEM filter. With two filters, the primary can remove bulk water, asphaltines, and quite a bit of solids. The OEM secondary can then remove the rest of the water and take another shot at the particles. The particle count difference can be dramatic. Give us 6 to 10 weeks; the electronics are difficult to match to the DMAX system. That's the hold up. Expect a heater kit too.
While were talking about particle counts, you might want to put a filtered air breather on your fuel tank. If you are in a dusty environment, the tank vent is open to all that. I don't know if that will cause odd behavior in the fuel system, but it's worth looking at. Don't let the particles in in the first place.
End of Quote...Edited by: Roegs