Technical Bulletins

14.001 – Vacuum Port Selection for Intake Valve Deposit Cleaning

13.001 – Proper Disposal of Used Penray Cooling System Cleaners

12.003 – Penray Off-Line Cleaner Twin Pack

12.001 – Penray 200264 Oil Purge – Cooling System Cleaner Crystal Formation

02.002 – Need-Release Date Code System

02.001 – Need-Release® Filter Service Life Extended to 150,000 Miles

01.017 – Converting Extended Life Coolant to Conventional Coolant

01.016 – Pencool SCA Recommendation: Deutz Marine Engines

01.015 – Cooling system Material Compatibility

01.014 – Implementing Pencool Maintenance Programs

01.013 – Glycol Oxidation

01.012 – Fill-For-Life Converting From Other Programs

01.011 – Extended Service Engine Coolants

01.010 – Dexcool Frequently Asked Questions

01.009 – Fuel Prep Diesel Fuel Additives

01.008 – Fill-For-Life Converting From Organic Acid

01.007 – Penray’s Fill-For-Life ESI Coolant Program

01.006 – Detroit Diesel Series 149 Engines

01.005 – Conductivity as a Tool to Evaluate Coolant Condition

01.004 – Compatibility of Pencool

01.003 – Bus Cooling Systems: Simplified Maintenance Program

01.001 – Fill-For-Life Approved Antifreeze Brands

00.002 – Submitting Coolant and Diesel Fuel Laboratory Samples

00.001 – Need-Release ESI Coolant Filter

99.023 – Water Quality in Engine Coolant

99.022a – Nitrited Organic Acid (NOAT) and Organic Acid (Dexcool) Problems in Engines

99.021 – Recycled Antifreeze and Engine Coolant Recycling

99.020 – NOAT Myths

99.019 – Using Penray Test Strips to Maintain Mixed Coolant Technologies

99.018 – Converting Fleetguard DCA Units to Pencool Equivalent

99.017 – Thread Lock Treatment and Coolant Filters

99.015 – Recycled Ethylene Glycol (Antifreeze) Advisory

99.014 – Black Engine Coolant

99.011 – Need-Release For Mack Trucks

99.009 – Converting New Trucks to the Fill-For-Life Program

Texaco’s “Fix”; Add silicate to NOAT Engine Coolant

TechBulletinCumminsNOAT

99.004 – Diesel Fuel Additives: Compatibility

99.001 – Yanmar Marine Diesels and Pencool

98.004 – Need-Release for Medium Duty Trucks (NF-2091)

98.003 – Preventing Cooling System Problems in Light-Duty Diesels

98.002 – Nitrited Organic Acid (NOAT) and Organic Acid (Dexcool) Compatibility

97.009 – Optimizing Water Pump Life in Diesel Engines

97.007 – Reserve Alkalinity

97.006 – Fill-For-Life in Fleets That Operate Various Sizes of Vehicles

96.005 – Fill-For-Life Approved Hino Practice for Non-Filtered Trucks

96.004 – Fill-For-Life Approved Hino Practice for Filter-Equipped Trucks

95.014 – Bus Cooling Systems

95.012 – Fully Formulated (Pre-Charged) Antifreeze Benefits

95.011 – Propylene Glycol vs. Ethylene Glycol Antifreeze

95.010 – Diesel Fuel: Using the New Low Sulfur Diesel

95.009 – Diesel Fuel Stability