Monitor Water Quality When Servicing Coolant

Monitor Water Quality When Servicing Coolant

The harder the water, the more likely the water pump is to develop a leak.

MODELS

Chrysler/Dodge/RAM 2013-2024 All Models

Through warranty analysis and component testing, it has been confirmed that filling the vehicle cooling system with any water other than distilled water can lead to coolant leakage through the water pump mechanical seal. If “tap or well” water is added to the cooling system to dilute concentrated coolant, hard particulates and minerals that may be present in most “tap or well” water will build up between the water pump mechanical seal faces as the coolant mixture passes through the mechanical seal and evaporates by design. The harder (poorer the quality) the tap or well water, the more likely the pump is to develop a leak.

REFILLING COOLANT SYSTEM AFTER SERVICE

In order to avoid vehicles returning with coolant leaks from the water pump after a cooling system service has been performed, we recommend the following:

Always refill the cooling system using prediluted 50/50 coolant or Mopar concentrated coolant diluted with distilled water only (DO NOT DILUTE WITH TAP OR WELL WATER).

If the shop has a properly maintained Reverse Osmosis Water Purification system it may be used for diluting concentrate if distilled water is not available. Well water should never be used.

Also, if topping off a vehicle that is found to be low on coolant, always top off with prediluted

50/50 coolant (DO NOT DILUTE WITH TAP OR WELL WATER).

You May Also Like

Ford 2.0L EcoBoost Rattle Noise

To correct the condition, follow the Service Procedure to replace the flexplate, transmission fluid pump & torque converter.

Beating the Tech Shortage Through Mentoring

How understanding the 80/20 Rule and creative mentoring can make the shortage less threatening.

GM Diagnostic Tip on Misfires, Noises and DTCs

Determine which description best matches the vehicle you are working on, and perform the suggestions as necessary.

Inside the Scan Tool

A look at the internal and external components that affect performance and durability.

Modern Vehicles Need Precious Metals 

Modern ignition systems require dual precious metal spark plugs capable of supplying the highest voltage outputs to date

Other Posts

Why Does Engine Coolant Need Replacement?

Two specifications can be used to justify replacement — the condition of the additive package & the freezing point.

Hybrid Vehicle Fluid Maintenance

There are opportunities your shop can’t pass up just because the car or SUV has a hybrid badge on the back.

Understanding Coolants

All-season coolant used inorganic acid technology and worked great for almost 30 years.

Subaru EJ25 Head Gasket Problems

Most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak.