Common Questions
Q: How do I know if I need a new Dura-Lite® charge air cooler?
A: If your charge air cooler is leaking, you probably need to replace it. Some original equipment coolers leak when they are new, and only get worse as time goes by. A cooler that is leaking will allow the compressed air out of the turbo charger to escape before it gets to the engine. This will result in power loss and poor economy. A quick leak down test of the charge air cooler, will tell you how bad the situation is.
Q: What is a "leak down" test?
A: A leak down test is a test which shows the amount of leakage from your charge air cooler. The basic procedure is to pressurize the cooler and then see how long it takes the air to escape. We sell a set of tools that will allow you to test your cooler in a safe and accurate manner. Your local diesel engine service centre will also have the equipment to test your cooler. We recommend that the cooler be tested at every oil change.
Q: How much leakage is acceptable?
A: Each engine supplier has their own specifications. Please see the chart that is shown below:
OEM Leak Down Specifications:
| Caterpillar | 5psi over 15 seconds @ 30psig |
| Cummins (ISC, ISB) | 7psi over 15 seconds @ 30psig |
| Cummins | 5psi over 15 seconds @ 30psig |
| Detroit Diesel | 5psi over 15 seconds @ 25psig |
| Detroit Diesel (EGR) | 5psi over 30 seconds @ 30psig |
| International | 5psi over 15 seconds @ 30psig |
| Mack | 5psi over 15 seconds @ 30psig |
| Volvo | 5psi over 15 seconds @ 30psig |
Q:Where do I buy a Dura-Lite® charge air cooler?
A:We have distributors throughout Australia and New Zealand.
Please contact our Customer Service Department at or toll free on 1800-674-110 for the name of a distributor nearest you.
The Dura-Lite® Evolution™ Charge Air Cooler