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Optimize the efficiency of your engines with
fast, accurate drip oil analysis
DOT.FAST® Service
Why should your fleet use Drip Oil Analysis?
2 | DOT.FAST Service
“Measuring the total iron
content of piston underside
drain oil with Chevron’s
DOT.FAST® Service provides
very valuable feedback
of the piston running
conditions in each cylinder,
and allows operators to
optimize cylinder oil feed
rates for a specific set of
operating conditions.”
— Wärtsilä Switzerland
“Continuous monitoring
of drain oil samples is
a good way to optimize
the cylinder oil feed rate
and consumption and
to safeguard the engine
against excessive wear. The
fastest way to evaluate the
corrosive behavior of an
engine and optimize the
feed rate is to do a stress
test, a so-called sweep test.
It can also be used in the
ACC familiarization period
to find the suitable lube oil
feed rate for your particular
engine, operating pattern
and lube oil used.”
— MAN Diesel A/S
DOT.FAST® ServiceModifications in the design of marine slow speed
engines of the latest generation and new modes of
operation such as slow streaming have led to more
corrosion sensitive combustion conditions. On top
of that the variety of fuels of different quality and
sulfur levels (distillate, Low and High Sulfur Residual
Fuel, LNG) makes it even more complex.
For this it is now more important than ever to better
understand and balance conditions in your engine.
Drip oil analysis can give you the answers and is recommended by all major slow
speed 2-stroke engine OEMs (MAN Diesel and Turbo, Wärtsilä). Analysis of unburned
cylinder oil which has passed through the combustion chamber and past the pistons
and liners in the main engine is an effective way to monitor engine wear.
DOT.FAST Service | 3
“It is MAN’s experience that, in addition to regular
scavenge port inspections, drip oil analysis can
be a very useful tool to monitor combustion and
cylinder conditions.
“Drip oil analysis can detect changes in cylinder
liner wear and help with cylinder oil feed rate
optimization programs.
“Chevron’s DOT.FAST Service makes it possible
to monitor, both onboard and onshore, the total
amount of adhesive, abrasive and corrosive wear.”
— MAN Diesel A/S
The DOT.FAST® Onboard Test Kit consists of the Drip Oil Analyzer, pipette, DispoRack™, and DOT.FAST Onboard Software.
4 | DOT.FAST Service
Everything you will need for a full year is supplied with your first order,
and the service can be extended for subsequent years as required.
The benefits you may receive from onboard analysis include:
• Reliable onboard wear measurement with laboratory accuracy
• Immediate feedback on cylinder running conditions
• Optimized cylinder lubrication at different engine operating modes
• Early indication of elevated engine wear, both abrasive and corrosive
• Minimized build-up of abrasive deposits and engine fouling
• Reduced risk of scuffing• Minimized cylinder oil consumption
by optimizing cylinder oil feed rate
• Easy compliance with engine builders’ recommendations
• Better engine protection while fuels of varying quality are in use
• Increased time between overhauls• Predictive maintenance and less
downtime, i.e., Condition Based Monitoring (CBM)
• Monitoring of running-in of new units
• A valuable complement to regular engine inspections
• Optimized operations
The DOT.FAST® Service provides your fleet with both onboard and onshore analysis of drip oil, and measures total iron wear including corrosive wear.
Onboard Analysis
Onshore Analysis
Chevron’s Drip Oil Analyzer and MicroMan® Pipette DispoRack™ with 12 ITUs (Iron Testing Units)
The additional benefits of onshore analysis may include:
• Testing of drip oil samples via highest industry standards in a quality certified laboratory
• Comprehensive reporting with to-the-point commenting considering the full picture
• Recommended for onboard Sweep Testing
• Monitoring effectiveness of fuel purification through measurement of CAT Fines
• Identifying excessive system oil leakage (for example, through stuffing box glands)
• Monitoring of piston ring groove wear
• Indication of blow-by
250Recommended sampling frequency for Onboard Drip Oil Analysis (or each time the vessel switches to a new batch of HFO)
running hours
1,000Recommended sampling frequency for Onshore Drip Oil Analysis
running hours
DOT.FAST Service | 5
The DOT.FAST® Service was evaluated in cooperation with operators and equipment builders in the marine and power generation industries.
In field tests onboard Wallenius Marine’s M/V Undine and Suisse Atlantique’s M/V Général Guisan, lubrication engineers and crew members found the DOT.FAST Drip Oil Analyzer to be both effective and easy to operate.
Field experience
Chevron’s laboratory provides complete analysis of your samples with review and comments by technical experts.
6 | DOT.FAST Service
Alkalinity Acidity
Influenced by:
• Base number of oil
• Oil feed-rate
Influenced by:
• Engine load
• Sulphur content of fuel
Minimal depositsControlled corrosion
Excessive deposits Excessive corrosion
Sulphur/Base Balance
Iron Content as Function of BN
0
100
200
300
400
500
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0BN (mgKOH/g)
Iro
n (
pp
m)
Oil feed rate is too low Oil feed rate could be decreased
Optimum oil feed rate
Excessive abrasive and corrosive wear
This graph is based on real time data and will vary from engine to engine.
Mainly corrosive wear
Low wear
Excessive abrasive wear
The Sulphur/Base BalanceHigh sulphur fuel oil burns to produce
oxides of sulphur (SOx) during
combustion. In the presence of water,
these SOx form sulphuric acid which
causes corrosion in the engine;
different levels of sulphur in the fuel oil
contribute to varying levels of acidity.
One task for the cylinder oil is to
protect the engine from acidic
corrosion. This is achieved by the
alkalinity of the cylinder oil, defined
by its base number (BN) and its feed
rate. Too much alkalinity however,
will result in the formation of
excessive abrasive deposits on the
piston crown top lands, ultimately
leading to increased liner wear and
scuffing.
It is important to maintain the
correct sulphur/base balance.
This balance can be achieved by
changing to a cylinder oil with
an appropriate BN, by adjusting
the cylinder oil feed rate or a
combination of the two. Chevron
Marine Lubricants offers cylinder
oils with a very wide BN range, going
from 25BN to 100BN (Taro Special
HT LF, Taro Special HT LS 40, Taro
Special HT 55, Taro Special HT 70
and Taro Special HT 100).
The total iron content measured
by DOT.FAST® indicates the total
corrosive and abrasive wear taking
place in the engine, enabling you to
make any necessary adjustments.
FeDOT.FAST Onboard Drip Oil Analysis provides accurate measurement of total iron wear including corrosive wear
Correlation Between Onboard and Onshore Analysis
Iron (ppm) by ICP-AES (Lab reference method)
0
100
200
300
400
500
600
700
800
900
1000
0 100 200 300 400 500 600 700 800 900 1000
Iron (ppm)ICP-AES: Plasma Atomic Emission Spectrometry
Iron
(ppm
) by
DO
T.F
AS
T O
nboard
An
aly
zer
Onboard AnalysisThe DOT.FAST® Drip Oil Analyzer is unique and innovative in the industry and delivers onboard test results with laboratory accuracy. The DOT.FAST Drip Oil Analyzer comes with everything you need to prepare and test samples, including a custom-designed DispoRack and software to record, process and interpret results.
Using the Drip Oil Analyzer once every two weeks ensures effective management of your engine’s lubrication. It can also be beneficial to do onboard drip oil analysis after changing to a new batch of fuel oil or to monitor the running-in process of new overhauled units.
Onshore AnalysisSamples sent to Chevron’s laboratory are fully analyzed (base number, iron and all other elements). The results are tabulated and reviewed by technical experts.
Recommendations are reported back to the ship. Historical data is maintained and can be accessed via a password-protected Internet site.
Subscribers to the DOT.FAST Service may send a full set of samples for analysis once every two months.
Extensive testing has shown that the DOT.FAST Drip Oil Analyzer provides unbiased results compared with ICP-AES used in a laboratory setting.
Always confirm that the product selected is consistent with the original equipment manufacturer’s recommendation for the equipment operating conditions and customer’s maintenance practices.
© 2017 Chevron Marine Products LLC. All rights reserved. All trademarks are the property of Chevron Intellectual Property LLC or their respective owners. IDU169260 1/17 R-272 (6/13)
Always confirm that the product selected is consistent with the original equipment manufacturer’s recommendation for the equipment operating conditions and customer’s maintenance practices.
GermanyChevron Products Germany Inc.Jungfernstieg 4920354 HamburgGermanyTel: +49 40 349 710 00Email: [email protected] SingaporeChevron Singapore Pte. Ltd.Chevron House30 Raffles Place #21-01Singapore 048622Tel: +65 6318 1000Email: [email protected]
GreeceChevron Marine Products Hellas S.A.70, Filonos Street185 35 PiraeusAthens, GreeceTel: +30 210 9473000Email: [email protected]
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For more information, please contact any Chevron Marine Lubricants sales office:
Or visit our website: www.chevronmarineproducts.com
