7064 - Supply of DEC Lubricating Oil, 3.Statement of Work/ Specifications
Wärtsilä
Corporation
Finland
Technology
INSTALLATION MANUAL
This doc is the property of Wärtsilä Corp. and shall neither be copied, shown or communicated to a third party without the consent of the owner.
Subtitle Product Made 11.08.1998 K. Juoperi /
J. Norrgård Page Document No Rev
-
Wärtsilä 34SG
Wärtsilä 34LPG
Wärtsilä 50SG
Appd. 15.01.1999 U. Åstrand 1 (4) 4V92A0780 k
Revised date: 24.09.2015 Changed by: K.
Juoperi/F. Zhang Approved by: J. Mikkilä/A. Vakkila Change notice No.: CN-A027972
REQUIREMENTS AND OIL QUALITY
LUBRICATING OIL REQUIREMENTS AND QUALITY FOR WÄRTSILÄ®
34SG, WÄRTSILÄ® 34LPG AND WÄRTSILÄ® 50SG ENGINES
Viscosity
Viscosity class SAE 40
Viscosity Index (VI)
Min. 95
Alkalinity (BN)
Lubricating oils with BN of 4 - 7 mg KOH/g have to be used.
Sulphated ash level
The content of sulphated ash in gas engine lubricating oils is a very important property. Too
high ash content can cause preignition, knocking and spark plug fouling, while too low ash
content can lead to increased valve wear. Low ash lubricating oils with sulphated ash level
of max. 0,6 % m/m have to be used.
Additives
The oils shall contain additives that give good oxidation stability, corrosion protection, load
carrying capacity, neutralisation of acid combustion and oxidation residues and should
prevent deposit formation on internal engine parts.
Foaming characteristics
Fresh lubricating oil shall meet the following limits for foaming tendency and stability,
according to the ASTM D 892-92 test method:
Sequence I: 100/0 ml
Sequence II: 100/0 ml
Sequence III: 100/0 ml
Base oils
Use of virgin base stocks is only allowed, i.e. recycled or re-refined base oils are not
allowed.
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CONDEMNING LIMITS FOR USED LUBRICATING OIL
When estimating the condition of used lubricating oil, the following properties along with the
corresponding limit values must be noted. If the limits are exceeded, measures must be
taken. Compare also with guidance values for fresh lubricating of the brand used.
PROPERTY UNIT LIMIT TEST METHOD
Viscosity cSt at 40 °C max. 50% increase ASTM D 445
Viscosity cSt at 100 °C max. 25% increase ASTM D 445
Water % v/v or % m/m max. 0,30 ASTM D 95 or D 6304C
Base Number mg KOH/g max. 50% depletion ASTM D 2896
Total Acid Number mg KOH/g max. 2,5 mg KOH/g
increase
ASTM D 664
Insolubles % m/m in
n-pentane
max. 1,0 ASTM D 893b
Oxidation Abs/cm max. 25 IR
Nitration Abs/cm max. 20 IR
CHANGE OF LUBRICATING OIL BRAND
Top-up with another lubricating oil brand than being filled to the system is not allowed,
except if the both two lubricating oils originate from the same manufacturer and are based
on same base oils and additive technology. Otherwise the lubricating oil system has to be
drained and then filled with another brand by following the procedure described here below.
In order to minimize the risk of lubricating oil foaming, deposit formation, blocking of
lubricating oil filters, damage of engine components, etc., the following procedure should be
followed when lubricating oil brand is changed from one to another:
If possible, change the lubricating oil brand in connection with an engine (piston)
overhaul
Drain old lubricating oil from the lubricating oil system
Clean the lubricating oil system in case of an excessive amount of deposits on the
surfaces of engine components, like crankcase, camshaft compartment, etc.
Fill the lubricating oil system with fresh lubricating oil
If the procedure described above is not followed, responsibility of possible damage and
malfunctions caused by lubricating oil change should always be agreed between the oil
company and customer.
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VALIDATED LUBRICATING OIL QUALITIES FOR WÄRTSILÄ® 34SG,
WÄRTSILÄ® 34LPG AND WÄRTSILÄ® 50SG
NATURAL GAS AND LIQUEFIED PETROLEUM GAS OPERATION
There exists experience that lubricating oils manufactured from API Group II or IV base oils
are able to offer better cleanliness of exhaust gas boiler / economizer compared to
lubricating oils manufactured from API Group I base oils and are thus recommended in the
first place for such applications. In some cases also longer change intervals may be
achieved by using API Gp II or IV based products.
Table 1: Validated gas engine oils based on API Gp II and IV base oils:
SUPPLIER BRAND NAME VISCOSITY BN SULPHATED
ASH (% m/m)
Bharat Petroleum
Corp. Ltd.
MAK GES XLA 40 SAE 40 5,3 0,48
Chevron (Texaco
+ Caltex)
HDAX 5200 Low Ash
Gas Engine Oil SAE 40
SAE 40 4,2 0,50
ExxonMobil Pegasus 905
Pegasus 1005
Pegasus 1
SAE 40
SAE 40
SAE 40
6,2
5,0
6,5
0,49
0,50
0,49
Idemitsu Kosan
Co. Ltd.
Apolloil GHP 40L SAE 40 4,7 0,45
MOL-LUB Ltd. MOL GMO Longlife 40 SAE 40 6,6 0,50
Pakelo Motor Oil
S.r.l.
Geoterm LA 4 SAE 40 6,6 0,50
Petro-Canada Sentron LD 5000 SAE 40 4,9 0,57
Petronas GEO S 40 SAE 40 5,6 0,46
Sasol Gas Engine Oil LA 40 SAE 40 5,5 0,50
Shell Mysella S5 N 40 SAE 40 4,5 0,48
Total Nateria X 405 *) SAE 40 5,2 0,45
Table 2: Validated gas engine oils based on API Gp I base oils:
SUPPLIER BRAND NAME VISCOSITY BN SULPHATED
ASH (% m/m)
Castrol Duratec L SAE 40 4,5 0,45
Chevron (Texaco
+ Caltex)
Geotex LA 40 SAE 40 5,2 0,45
ExxonMobil Pegasus 705
Pegasus 805
SAE 40
SAE 40
5,3
6,2
0,49
0,50
Lukoil Efforse 4004 SAE 40 5,56 0,49
Petrogal Galp GN 4005 SAE 40 5,2 0,45
Shell Mysella S3 N 40 SAE 40 5,0 0,45
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USE OF NON-VALIDATED LUBRICATING OILS:
Before using a lubricating oil not listed in the tables above, the engine manufacturer must be
contacted. Lubricating oils that are not validated have to be tested according to engine
manufacturer’s procedure.
Should a non-validated lubricating oil be used during the engine warranty period, and there
exist no agreement with the engine manufacturer about testing, the engine guarantee does
not hold.
Lubricating oil companies listed above along with other possible manufacturers and
distributors undertake all responsibility for the performance of their validated lubricating oils
in service to the exclusion of any liability of any Wärtsilä company belonging to Wärtsilä
group.
Further, they shall indemnify, compensate and hold harmless Wärtsilä and companies
belonging to Wärtsilä group from and against any claims, damages and losses caused by
the lubricating oils in question.
LUBRICATING OILS FOR ENGINE TURNING DEVICE
Based on the turning device manufacturer’s instructions EP-gear oils having viscosity of 414
- 506 cSt at 40 °C = ISO VG 460 are normally considered as suitable lubricating oils for
turning device. The following products are fulfilling the requirements:
LUBRICATING OILS FOR ENGINE TURNING DEVICE
SUPPLIER BRAND NAME VISCOSITY
cSt at 40 °C
VISCOSITY
cSt at 100 °C
VISCOSITY
INDEX (VI)
BP Energol GR-XP 460 460 30,5 95
Castrol Alpha SP 460 460 30,5 95
Chevron (Texaco
+ Caltex)
Meropa 460 460 31,2 97
ENI S.p.A. Blasia 320 300 23,0 95
ExxonMobil Mobilgear 600 XP 460 460 30,6 96
Fuchs Renolin CLP 460 460 30,4 95
Petro-Canada Enduratex EP 460 452 30,4 97
Shell Omala S2 G 460 460 30,8 97
Total / Lubmarine Carter EP 460 470 30,3 93