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MINISTRY OF DEFENCE NEW SPECIFICATION FOR HEAVY DUTY OILS

MINISTRY OF DEFENCE NEW SPECIFICATION FOR HEAVY DUTY OILS Commercial user will now know more about what he MINISTRY OF DEFENCE is buying. The DEF/2101 specification follows that of MIL-0- NE W SPECIFICATION FOR 2104 and consists essentially of a 480 hour Caterpillar Diesel Engine Test and a 36 hour Chevrolet Petrol HEAVY DUTY OILS Engine Test. In addition to these engine tests certain physical limits are stipulated and these are shown in SPECIFICATION DEF/2101, now published, supersedes Table I. It will be seen that three grades of oil have C.S. 2463, and covers Oils OMD-60, OMD-110, and been chosen in the SAE.20, 30 and 50 ranges, and the OMD-330. These three grades are designed for use limits for these grades are not difficult to comply with. in the compression ignition and spark ignition engines The British specification differs from the MIL-0- of ground equipment operated by the three Services. 2104 specification in so far as the viscosity ranges of I t covers H.D. oils. The I.Pet. 124/49 test for engine the three grades are concerned. The U.S. specifi­ testing is included with some modifications, one of cation covers the entire SAE.10 and 30 ranges and which calls for 0.35 per cent. minimum sulphur 40 per cent of the SAE.50 range. The British content in the fuel instead of 0.40 per cent. maximum. specification, whilst covering the same portion of the The cetane number of the fuel is modified to 40 to 45, SAE.50 range, only covers approximately 17 per cent instead of 43 min. and 53 max. No additives must be of the SAE.30 range and does not cover the SAE.10 used to produce a clean fuel. There are other minor range, but includes approximately 17 per cent of the modifications. Engine testing in accordance with SAE.20 range instead. MIL-0-2104 (ORD) is also included with several The use of these different ranges is bound to cause modifications in line with those mentioned above. inconvenience and misunderstanding since it is the The price of this Specification is one shilling net. intention of the U.S. Army Ordnance to give MIL-0- 2104 approval where possible to those oils approved This Specification has been reviewed for us by an by the British Authorities. Thus, it is possible for authority who writes :— oils coming within the British SAE.30 limits to obtain The realization that the recent method of blending both DEF/2101 and MIL-0-2104 approval, whereas their own detergent oils was unsatisfactory has other SAE.30 oils coming outside the British limits resulted in the British Military Authorities approving can only obtain the MIL-0-2104 approval. It would oils on a performance basis. It was only natural that also appear that oils coming within the British U.S. standards were adopted since there were no SAE.20 limits will not obtain U.S. approval and con­ recognized British engine tests, whereas there were versely those oils coming within the SAE.10 range already facilities for carrying out tests according to will not obtain British approval. the 2-104B, MIL-0-2104 and Supplement I specifi­ cations. I n view of the fact that one of the benefits of this adoption of U.S. test methods enables a standard­ The specification evolved, known as Ministry of ization to be obtained between oils in this country Defence Specification DEF/2101, is based essentially on the MIL-0-2104 specification with minor modifi­ and the U.S.A., it is perhaps unfortunate that the cations, this latter specification being the one in selection of different viscosity ranges should restrict current use by the U.S. Ordnance Department. the extent of this standardization. The adoption of such performance standards is I n the U.S.A., if an oil company has oils approved doubly welcome since oils approved by this specifi­ under one brand name in the SAE.10, 30 and 50 ranges, then it is usual to sell SAE.20 and 40 grade cation will bo commercially available, and the oils for commercial use under the same brand name by blending two or all three of the approved oils. TES T LIMITS. The U.S. Ordnance Department also permits oil TEST . OMD-6 0 OMD-11 0 OMD-330 companies to purchase from wholesalers, base stocks of oils which have already obtained approval. These base stocks can then be blended with the identical Colour (A.S.T.M.) 3-4½ 3-4½ 4- 6 amounts and types of additives as incorporated in the approved oils, and the resultant blends can be sold as Flas h point, min. 360°F. 390°F. 400°F . (182°C.) (199°C.) (204°C.) approved oils without the company concerned having to submit the oil for official tests. It is hoped that Viscosity, similar practices may come into being in this country. — — c.s. a t 210°F. 19.2 to 21.6 Viscosity, Conclusions. c.s. a t 100°F. 55 t o Co 105 t o 115 The introduction in this country of performance Viscosity, standards as a par t of crankcase oil specifications is a — — c.s. a t 0°F. 6,000 max . much needed step. Not only does this benefit the Military Authorities, but also the commercial user Viscosity index, min . 85 55 75 who can now feel sure of the quality of the oil he is purchasing. In addition the oil supplier who en­ deavours to sell a good quality detergent oil, can now Pou r point, max. -5°F . 0°F . 15°F. furnish performance type evidence of the quality of (-20.6°C.) (-17.8°C.) (-9.4°C.) his oil. Scientific LUBRICATION January, 1952 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

MINISTRY OF DEFENCE NEW SPECIFICATION FOR HEAVY DUTY OILS

Industrial Lubrication and Tribology , Volume 4 (1): 1 – Jan 1, 1952

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0036-8792
DOI
10.1108/eb052150
Publisher site
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Abstract

Commercial user will now know more about what he MINISTRY OF DEFENCE is buying. The DEF/2101 specification follows that of MIL-0- NE W SPECIFICATION FOR 2104 and consists essentially of a 480 hour Caterpillar Diesel Engine Test and a 36 hour Chevrolet Petrol HEAVY DUTY OILS Engine Test. In addition to these engine tests certain physical limits are stipulated and these are shown in SPECIFICATION DEF/2101, now published, supersedes Table I. It will be seen that three grades of oil have C.S. 2463, and covers Oils OMD-60, OMD-110, and been chosen in the SAE.20, 30 and 50 ranges, and the OMD-330. These three grades are designed for use limits for these grades are not difficult to comply with. in the compression ignition and spark ignition engines The British specification differs from the MIL-0- of ground equipment operated by the three Services. 2104 specification in so far as the viscosity ranges of I t covers H.D. oils. The I.Pet. 124/49 test for engine the three grades are concerned. The U.S. specifi­ testing is included with some modifications, one of cation covers the entire SAE.10 and 30 ranges and which calls for 0.35 per cent. minimum sulphur 40 per cent of the SAE.50 range. The British content in the fuel instead of 0.40 per cent. maximum. specification, whilst covering the same portion of the The cetane number of the fuel is modified to 40 to 45, SAE.50 range, only covers approximately 17 per cent instead of 43 min. and 53 max. No additives must be of the SAE.30 range and does not cover the SAE.10 used to produce a clean fuel. There are other minor range, but includes approximately 17 per cent of the modifications. Engine testing in accordance with SAE.20 range instead. MIL-0-2104 (ORD) is also included with several The use of these different ranges is bound to cause modifications in line with those mentioned above. inconvenience and misunderstanding since it is the The price of this Specification is one shilling net. intention of the U.S. Army Ordnance to give MIL-0- 2104 approval where possible to those oils approved This Specification has been reviewed for us by an by the British Authorities. Thus, it is possible for authority who writes :— oils coming within the British SAE.30 limits to obtain The realization that the recent method of blending both DEF/2101 and MIL-0-2104 approval, whereas their own detergent oils was unsatisfactory has other SAE.30 oils coming outside the British limits resulted in the British Military Authorities approving can only obtain the MIL-0-2104 approval. It would oils on a performance basis. It was only natural that also appear that oils coming within the British U.S. standards were adopted since there were no SAE.20 limits will not obtain U.S. approval and con­ recognized British engine tests, whereas there were versely those oils coming within the SAE.10 range already facilities for carrying out tests according to will not obtain British approval. the 2-104B, MIL-0-2104 and Supplement I specifi­ cations. I n view of the fact that one of the benefits of this adoption of U.S. test methods enables a standard­ The specification evolved, known as Ministry of ization to be obtained between oils in this country Defence Specification DEF/2101, is based essentially on the MIL-0-2104 specification with minor modifi­ and the U.S.A., it is perhaps unfortunate that the cations, this latter specification being the one in selection of different viscosity ranges should restrict current use by the U.S. Ordnance Department. the extent of this standardization. The adoption of such performance standards is I n the U.S.A., if an oil company has oils approved doubly welcome since oils approved by this specifi­ under one brand name in the SAE.10, 30 and 50 ranges, then it is usual to sell SAE.20 and 40 grade cation will bo commercially available, and the oils for commercial use under the same brand name by blending two or all three of the approved oils. TES T LIMITS. The U.S. Ordnance Department also permits oil TEST . OMD-6 0 OMD-11 0 OMD-330 companies to purchase from wholesalers, base stocks of oils which have already obtained approval. These base stocks can then be blended with the identical Colour (A.S.T.M.) 3-4½ 3-4½ 4- 6 amounts and types of additives as incorporated in the approved oils, and the resultant blends can be sold as Flas h point, min. 360°F. 390°F. 400°F . (182°C.) (199°C.) (204°C.) approved oils without the company concerned having to submit the oil for official tests. It is hoped that Viscosity, similar practices may come into being in this country. — — c.s. a t 210°F. 19.2 to 21.6 Viscosity, Conclusions. c.s. a t 100°F. 55 t o Co 105 t o 115 The introduction in this country of performance Viscosity, standards as a par t of crankcase oil specifications is a — — c.s. a t 0°F. 6,000 max . much needed step. Not only does this benefit the Military Authorities, but also the commercial user Viscosity index, min . 85 55 75 who can now feel sure of the quality of the oil he is purchasing. In addition the oil supplier who en­ deavours to sell a good quality detergent oil, can now Pou r point, max. -5°F . 0°F . 15°F. furnish performance type evidence of the quality of (-20.6°C.) (-17.8°C.) (-9.4°C.) his oil. Scientific LUBRICATION January, 1952

Journal

Industrial Lubrication and TribologyEmerald Publishing

Published: Jan 1, 1952

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