Article 1296 - Engine Crankcase Oil Viscosities

TSB #86 - February 23, 1968
(1967-68 242 and 363 CID Dorset Diesel Engines)


Reference: 1968 Ford Truck Maintenance and Lubrication Manual, Page 4-2

The referenced manual specifies only single viscosity crankcase lubricant for the 1968 Dorset Diesel engines. The listed service single and multi-viscosity grade crankcase lubricants for 242 and 363 CID Dorset Diesel engines must meet Engineering Specification #ESE-M2C-101-B titled Engine Oils -Service Fills - Most Severe Service (MS).

Please correct the referenced manual to show these latest lubrication specifications.


Temperature Range ° (F)Single Viscosity (SAE)Multi-Viscosity (SAE)
Below - 10 to 32
- 10 to 90
- 10 to 10
0 to above 90
10 to 32
32 to above 90
32 to 90
above 90
10 W


30
40
5 W 30
10 W 30

10 W 40
20 W 20
20 W 40