FAQ’s:How many gallons will this unit produce?The capacity of a deionization systems is primarily determined by the Total Dissolved Solids (TDS) in the water source. The TDS can be measured by using the meter provided. The TDS can range from 0 to 1,000 PPM plus but typically will fall between 100-400 ppm across the US.Example: @ 100 ppm of TDS = 1,120 gallonsWhat value of PPM will leave my vehicle with a spot free rinse?We have provided these ranges over the years:Excellent level: less than 15 ppm*Satisfactory range: Greater than 15 ppm but less than 50 ppmUnsatisfactory level: Greater than 50 ppm*Depends on coloration of vehicle, degree of stainless and one’s individual acceptance levelDoes this reduce my water pressure?There is a small pressure drop and should not be noticeable.When should I replace the resin in the tank?An acceptable TDS ceiling will vary from customer to customer and is greatly dependent upon the coloration of the vehicle. Most customers will operate between 20-40 ppm of TDS, mid-thirties seems to be a fairly wide acceptance level. We would recommend the use of the rather accurate digital TDS meter and measure the TDS during your first cycle thus quantitatively obtaining your preferred level.Can I run heated water through the Di tank?The DI has a max temperature of 105 degrees Fahrenheit.What do I do with the used resin once I refill the tank?The resin is non-hazardous and can be disposed through normal waste disposal processes. Always dispose in accordance with federal, state and local regulations.Will this harm my paint on my vehicle?No, DI water used to obtain a spot-free rinse has been used for applications including Auto’s/Class A RV’s/Small airplanes/Motorcycle’s/both residential & business windows plus many car washing businesses use this for their final rinse.