MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 135,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
Upload a Protoype Part
Phillips 66 76® Lubricants Guardol QLT® Motor Oil SAE Grade 15W-40  (discontinued **)
Categories: Fluid; Lubricant

Material Notes: 76® Guardol QLT Motor Oil is a premium quality universal fleet engine oil designed for use in on-highway diesel trucks and off-highway diesel equipment, as well as in passenger cars and light trucks with either diesel or gasoline engines. It is recommended for use both in EGR-equipped diesel engines and in older, non-EGR diesel engines. It also will provide excellent protection for gasoline engines for use in mixed commercial fleets. Guardol QLT is formulated with advanced additive technology and 76’s unique QLT® chemistry to provide outstanding wear protection, soot control and bearing corrosion protection. Outstanding soot dispersancy protects against abrasive wear and soot-induced oil thickening, and ensures good low-temperature pumpability even with soot-laden oil. High dispersancy-detergency and a high alkaline reserve (TBN) provide extra protection in extended drain or severe service intervals, and in EGR-equipped engines. Guardol QLT meets or exceeds the performance requirements of API Service Categories CI-4 and SL, API CI-4 PLUS, and leading OEM specifications and worldwide standards for diesel engine oils. It is backward serviceable for use where API CH-4 or earlier “C” category engine oils, or the concurrent earlier OEM specifications, are specified.


  • On-highway diesel trucks equipped with cooled-EGR, ACERT or other technologies to meet 2004 and earlier exhaust emission standards
  • Older diesel equipment with conventional, non-EGR engines
  • Mixed fleets with both diesel and gasoline-fueled vehicles
  • Off-highway construction, earth moving and mining equipment
  • Farm equipment with diesel or gasoline engines
Guardol QLT is licensed or OEM-certified for:
  • API Service CI-4 with CI-4 PLUS, CI-4, CH-4, SL
  • Cummins CES 20078
  • Detroit Diesel Power Guard 93K214
  • Mack EO-N Premium Plus 03
  • Renault VI RLD-2
  • Volvo VDS-3
Guardol QLT meets or exceeds the requirements of:
  • ACEA E7-04, E5-02, E3-96
  • Caterpillar ECF-2, ECF-1-a
  • Cummins CES 20077
  • Global DHD-1
  • MAN 271, 3275
  • Mercedes-Benz Sheet 228.3
  • MTU MTL 5044 Type 2
  • Diesel engines manufactured by OEMs not listed above, including International(Navistar), John Deere, Hino, Komatsu, Kubota and others
  • Outstanding soot control for protection against abrasive wear and soot-induced oil thickening
  • Excellent resistance to viscosity and thermal breakdown at high temperatures
  • Protects against sludge and varnish formation
  • Excellent wear protection
  • High shear stability
  • Excellent rust and bearing corrosion protection
  • Good low-temperature pumpability, even with soot-laden oil
  • Good resistance to foaming and aeration
  • Extended drain capability for non-EGR diesel engines

Information provided by Phillips 66 Lubricants. The 76® Lubricants brand name was consolidated into other Phillips 66 brands in 2016; many products remain available under a new name.

Available Properties
  • Specific Gravity
  • Density
  • Viscosity, High-Temp/High-Shear
  • Viscosity, Cold Cranking
  • Viscosity Measurement, Index
  • Kinematic Viscosity at 40°C (104°F)
  • Kinematic Viscosity at 100°C (212°F)
  • Ash, ASTM D874, Sulfated
  • ASTM Color, ASTM D1500, L
  • Total Base Number, ASTM D2896
  • Pour Point
  • Flash Point, COC
  • Zinc, Zn
Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
), please click the button below.

Manufacturer Notes:

Category Notes

Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

Users of our Advanced Search (registration required) may exclude discontinued materials from search results.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.


Polymer Distribution
Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2020 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.