NHTSA ID Number: 11034398
Manufacturer Communication Number: IK4300031
TSB/Document Date: 2026-07-02
Summary
This document will provide information regarding certain approved S13 and T14 chemicals.
Countries:
BAHAMAS, BOLIVIA, BELIZE, CANADA,
CHILE, COLOMBIA, COSTA RICA,
DOMINICAN REPUBLIC, ECUADOR, EL
SALVADOR, GUATEMALA, GUYANA, HAITI,
HONDURAS, JAMAICA, MEXICO, ARUBA,
NICARAGUA, PANAMA, PERU, PUERTO
RICO, TRINIDAD AND TOBAGO, UNITED
STATES, URUGUAY, VENEZUELA, Curaçao
Availability: FleetISIS, IsSIR
Major
TECHNICAL SERVICE
System:
Current
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IK4300031
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Revision: 3
Created:
4/8/2025
Last
6/16/2026
Modified:
Author:
Frank
Amstadt
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Title : S13 & T14 Requirements for Engine and Transmission Silicones, Thread Lockers, Lubes, and
Sealants
Applies To : MY2023, MY2024, MY2025, MY2026 LT, RH, HVHD, HX w/ S13 Engine, T14 Transmission
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
03/24/2026 - Updated Loctite to include "graphite"
04/29/2025 - Initial Article Release
DESCRIPTION
This document will provide information regarding certain approved S13 and T14 chemicals.
SERVICE PARTS INFORMATION
The S13 Powertrain has been tested and validated with the following silicones, thread lockers, lubricants, sealants (chemicals), and are the
recommended chemicals to use to maintain performance and longevity of the powertrain.
Always reference the service manual for your powertrain and chassis.
None of the chemicals are stocked in international
PDC’s; there may be a direct or drop ship source (SOS code dependent), or you must
locate a local supplier.
Component Fluid Part number
Notes
Supplier
Omnifit 200 m
104007N1
Exdron / Sichel/Loctite
Molykote em30-l
104603N1
Dow Corning
Dowsil 7091
DOW7091KK
Dow Corning
Dowsil 732
104313N1
Black version
Dow Corning
Renolit mp735
104008N1
Engine bearing lube
Fuchs
Loctite 270
104513N1
271 is not an acceptable
equivalent.
Henkels/Loctite
Polylub gly151
104161N1
kluber
Gray Engine Paint
n/a
high temp, fuel safe, fast
drying.
Use local source
Loctite Graphite 50
Loc234244KK
Aftertreatment lubricant
Sealant to metal
surface cleaner
na
Alcohol based cleaning
agent
Use local Source
Fa-4 ck-4
Loctite 128467
110680N1
metallstick
104330N1
Scan-tech
Gadus s3 v220c 2
105208N1
Retinax lx2,
Albida grease ep 2
Vaselin WB 10
360550060
106600N1
Castrol
Loctite 574
LOC2330649KK
Henkels/Loctite
Loctite 620
LOC62015KK
Henkels/Loctite
Always handle and use chemicals from clean containers. Do not use containers that previously contained other types of chemicals, fluids,
oils, coolants, or solutions. It is recommended to use containers that the fluids were shipped in and not to reuse containers. Reseal
containers after use.
Certain chemicals have limited shelf lives; you must use them within that shelf-life window.
WARRANTY INFORMATION
Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Standard Repair Time(s):
Refer to the SRT Manual for Repair Times
OTHER RESOURCES
Master Service Information Site
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Copyright © 2026 Navistar, Inc.
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TSB/Document ID: IK4300031
Replacement Service Bulletin Number:
MFR Communication Date: 2026-06-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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