

PENNZOIL® SYNCHROMESH FLUID is a synchromesh transmission fluid designed for certain manual transaxles and
manual transmissions used by General Motors. PENNZOIL® SYNCHROMESH FLUID is formulated with high quality
paraffinic base stocks, a fluidity modifier, multifunctional performance additives, corrosion inhibitors, a foam suppressor
and a shear stable viscosity index improver additive. It provides excellent oxidation stability, low temperature
performance, excellent synchronizer performance and compatibility with yellow metals, such as bronze, brass and copper
components found in manual transaxles and transmissions. This product will satisfactorily lubricate General Motors
manual transaxles and transmissions from -40°C to +150°C.
APPLICATION
PENNZOIL® SYNCHROMESH FLUID is specifically formulated for synchromesh transmissions used by General Motors
requiring General Motors Part No. 12345349 (Specification No. 9985648) Synchromesh Transmission Fluid or Chrysler
transmissions requiring Part No. 4874464 (Specification MS-9224). It is also recommended for use in General Motor
transmissions requiring General Motors Part No. 12345577.
PENNZOIL® SYNCHROMESH FLUID is NOT intended for all GLS applications. You must verify the manufacturer’s part number, indicated by a superscript number and found at the end of the vehicle application listing.
BENEFITS
• Exhibits excellent low temperature performance
• Meets GM Specification 9985648
• Suitable for use in GM manual transaxles and transmissions requiring GM Part No. 12345349 or 12345577
• Meets Chrysler specification MS-9224
• Suitable for use in Chrylser transaxles and transmissions requiring Part No. 4874464
• Excellent synchronizer performance
• Excellent yellow metal compatibility
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