Reply to "K&N air filter for Duramax Diesel- Yes or No"

Les1LES IS MORE (Mods) Lifetime Member

Jason,

The stock fuel filter on your new PU, has an electronic sensor on the bottom so it is supposed to send a message to your dash if water is present. It also has a drain valve, so one can manually remove water collected in the filter.

All diesel today, likely has some water present, and the stock fuel filter can protect your expensive fuel delivery components from small amounts of water.

The real danger is when someone gets bad fuel contaminated with lots of water. Then the stock filter can allow the water to go through to the injector pump. This can cause catastrophic damage to the pump/injectors, etc. Repair costs can exceed $10,000!

The Bosh CP4 pump can also be damaged by diesel fuel with low lubricity. Chances are relatively low, you will have any of these problems. 😊

3/11/247:38 AM

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