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美孚(柴油发动机油)佳特570详细说明 (浏览1044次)
Mobilgard 570  详细信息:

Mobilgard 570
Diesel Engine Cylinder Oil

Product Description
Mobilgard 570 by ExxonMobil is a superior quality, extra high performance, marine diesel engine cylinder oil.
This bold new approach in cylinder lubricant technology provides maximum protection from adhesive and
corrosive wear at the higher operating temperatures and pressures of today's modern crosshead engines. The
outstanding performance of Mobilgard 570 has been demonstrated at the highest peak firing pressures and liner
temperatures.

Mobilgard 570 employs additives with substantially greater thermal stability and superior acid-corrosion protection.
It has an optimum viscosity of over 20 cSt. at 100oC and low volatility for best lubricant distribution and film
retention. Through the use of unique formulation technology, the higher viscosity is attained with little or no use
of thermally less stable, deposit-producing bright stock. Unique technology at the 70 TBN alkalinity level in
Mobilgard 570 has demonstrated superior ring and liner protection and cleanliness under sustained operation
with fuel sulphur levels down to 1.5%, but in some cases can be used in lower sulphur applications with the
approval of the engine manufacturer.

Features and Benefits
Mobilgard 570 cylinder oil offers the following features and potential benefits:

Features                                                       Advantages and Potential Benefits
Excellent thermal and oxidation stability                      Reduced deposits and sludge formation Cleaner engine
                                                               reduces lay-up time required for overhauls
Exceptional antiwear properties                                Reduced liner and ring wear Excellent anti-scuffing
                                                               control
Outstanding detergency capability                              Superior piston and liner cleanliness increases
                                                               combustion efficiency and extends periods between
                                                               piston overhauls
High TBN level and retention                                   Wide fuel sulphur capability Minimises the corrosive
                                                               effect of high sulphur fuel combustion

Applications

Mobilgard 570 has been developed for marine crosshead engines designed for increased power and fuel
efficiency. Such engines exhibit higher temperatures and pressures in the cylinder, which reduce the lubricant's
viscosity and increase the loads which it must withstand. Longer piston strokes have greatly increased the
amount of surface to be protected and the amount of time the lubricant must withstand the severe cylinder
temperatures and corrosive sulphur acids. Mobilgard 570 has also demonstrated superior performance in earlier
engine designs.

To ensure achieving the maximum equipment life possible, particular attention should be paid to the manufacturer's
special recommendations regarding the running-in of new rings and liners.


 

Applications where the sulphur level is below  1.5% require special consideration and should be discussed with
your ExxonMobil representative.

Appropriate feed rates should be verified in all cases by through-the-ports inspection of liners for adequate oil
film.

Typical Properties

SAE Grade                                                                      50
Specific Gravity at 15oC                                                      0.937
Flash Point, oC, ASTM D 92                                                    256
Pour Point, oC, ASTM D 97                                                     -9
Viscosity, ASTM D 445
cSt, at 40oC                                                                  222
cSt, at 100oC                                                                 20
Viscosity Index, ASTM D 2270                                                   104
TBN, mg KOH/g, ASTM D 2896                                                    70

Health and Safety
Based on available information, this product is not expected to produce adverse effects on health when used
for the intended application, following the recommendations provided in the Material Safety Data Sheet (MSDS).
MSDSs are available upon request through your sales contract office, or via the Internet on
http://exxonmobil.com. This product should not be used for purposes other than its intended use. If disposing
of used product, take care to protect the environment.

The ExxonMobil logotype and Mobilgard are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.

ExxonMobil Lubricants & Specialties
All products may not be available locally. For more information, contact your local sales office or visit exxonmobil.com.
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or
supersede the corporate separateness of local entities. Responsibility for local actionand accountability remains with the local ExxonMobil affiliate entities. Due to continual product
research and development, the information contained herein is subject to change without notification. Typical Properties may vary slightly.
(C) 2007 Exxon Mobil Corporation. All rights reserved.

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