Heavy Oil Engines Cold-Starting Types - Continued |
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| Group Index | Type Class | Engine Size | Manufacturing Dates |
| 38L | VYO | 1VYO | Feb 1938 to Nov 1945 |
| 19G | HR | 1, 1XHR, 1YHR | February 1938 to Dec 1961 |
| 39L | VDB | 6VDB | July 1938 to July 1940 |
| 40L | VAB | 4, 5 & 6VAB | Jan 1939 to April 1944 |
| 41L | VRB | 3, 4, 5 & 6VRB | Jan 1939 to Dec 1945 |
| 42L | VCB | 3, 4, 5 & 6VCB | Jan 1939 to 1960's |
| 43L | VEB Mk1 & Mk2 | 4, 5, 6, 7 & 8VEB Mk1 & Mk2 | April 1939 to Dec 1962 |
| 44L | VLB | 5, 6, 7 & 8VLB | Aug 1939 to June 1960 |
| 45L | VGB/X | 5, 6, 7 & 8VBG | Oct 1939 to June 1960 |
| 46L | MAN | MAN | June 1941 to June 1941 |
| 20G | H | 10YH | July 1942 to Jan 1946 |
| 47L | VPH | 4, 5 & 6VPH | Sept 1943 to Feb 1962 |
| 48L | VSH | 1, 2, 3 & 4VSH | Jan 1944 to Nov 1958 |
| 49L | VRH | 3, 4 & 6VRH & 4VROHN | April 1944 to Aug 1955 |
| 50L | VOX | 5, 6, 7, 8 & 9VOX | Dec 1946 to March 1962 |
| 51L | VTH | 1, 2 & 3VTH | June 1947 to May 1959 |
| 52L | YE | 4, 5 & 6YE | Aug 1950 to 1968 |
| 21G | ZHR | 1ZHR | May 1952 to December 1963 |
| 22G | HRO | 2, 3, 4 & 5HRO | Jan 1953 to 1968 |
| 23G | YB/YBA | 1, 2YB / YBA Transferred to Lincoln Dec 1963 | Nov 1954 to 1968 |
| 53L | YC | 2, 3, 4 & 6YC | July 1955 to Dec 1960 |
| 54L | YF | 5YF & 6YF | Nov 1956 to Jan 1961 |
| 55L | YDA Mk1 | 2, 3, 4 & 6YDA Mk1 | May 1958 to Feb 1964 Except 2YDA Dec 1964 |
| 56G | YWA Mk1 | 1 & 2YWA Mk1 Transferred to Lincoln Dec 1963 | Nov 1958 to Dec 1963 |
| 57L | YD | 2, 3, 4 & 6YD | Sept 1959 to 1968 |
| 58L | VEB/X/C/3 | 5, 6, 7 & 8VEB/X/C/3 | Sept 1959 to 1968 |
| 59L | VCBX | 5 & 6VCBX | Dec 1960 to 1968 |
| 60L | ATX/C Mk1 | 5,6,7,8 & 9ATX/C Mk1 | Feb 1960 to Feb 1965 |
| 61L | ATC Mk1A | 5, 6, 7, 8 & 9ATC Mk1A | feb 1965 to 1968 |
| 62L | ATC Vee Format | 12, 16 & 18ATC | July 1964 to 1968 |
| 63L | ATC Mk2 | 5, 6, 7, 8 & 9ATC Mk2 | |
| 64L | ATC Mk2 Vee Format | 12, 16 & 18ATC Mk2 | |
| 65L | APC | 6APC | Feb 1964 to 1968 |
| 66L | YWA Mk2 | 1 & 2YWA Mk2 | Jan 1964 to 1968 |
| 67L | YDA Mk2 | 3, 4 & 6YDA Mk2 | Feb 1964 to 1968 |
| 68L | 3YWA | 3YWA | July 1964 to 1968 |
| 69L | WB | 1WB | Aug 1964 to 1968 |
| 70L | VEBG | 6 & 8VEBG | Sept 1964 to 1968 |
| 71L | YDA Mk2 | 2YDA Mk2 | Jan 1965 to 1968 |
| HRY | HRY | ||
| This series completed | |||