Re: [Chrysler300] Exhaust Manifold Heat Valve - Solvent

["John L. Chesnutt" <chesnutt@xxxxxxxxxxxx>]

More information on the Solvent to free the Exhaust Heat Control Valve. The
description on the MOPAR 8 oz.can that I have is:

"Mopar - Heat Control Valve Solvent Penetrating Fluid. Part No. 4-187: Part
No. 3419 128. dated 1972.  Contains aromatic petroleum distillates, butyl
cellosolve and colloidal graphite. The can says: Distributed by Chrysler
Corp."

"A specially formulated to dissolve lead-oxide deposit formation on manifold
valve shaft, allowing heat control valve to operate freely at all times. An
excellent rust penetrant."

A person should be able to find this product at a parts house under another
brand.

John & Arlys Chesnutt, Portland, OR  1957 300C and 1970 300 Convertible



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