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TSB 07-03-90

Engine Coolant Recycling

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Models: All Domestic & Import Vehicles

Discussion:

A number of systems are being marketed to "recycle" or "reconstitute" used ethylene glycol antifreeze/coolant in the dealership. Some of the systems have been advertised as producing a recycled antifreeze "as good as" original and suggest the recycled product is suitable for use in Chrysler Corporation vehicles.

Tests, so far, indicate most of these systems merely remove suspended solids from the used antifreeze/coolant through the use of various size filters. These systems do not remove glycol degradation products, or dissolved solids, which can cause water pump seal wear.

These systems use a universal "reinhibitor package". The "reinhibitor package" can not restore every type antifreeze/coolant inhibitor system to a like new condition.

Tests results indicate these "recycled" products do not consistently provide the protection required in Chrysler Corporation engines and cooling systems.

The use of these "reconstituted" antifreeze/coolants Is not authorized in the performance of any repair covered under the provisions of the warranty.

Policy: Information only.