JASO FD
Overview
JASO FD oils are defined for higher detergency and engine cleanliness performance as well as meeting the lubricity and low smoke requirements. JASO FD oils deliver superior performance to both JASO FB and JASO FC in all the evaluated areas. They are designed for use in two-stroke motorcycles and small engine equipment.
The main physical, chemical and engine test requirements, according to the current version of the standard (JASO M345:2018), for JASO FD oils are shown below:
Physical and Chemical
| Requirement | Methods | Unit | Limit |
| Kinematic Viscosity (100°C) | D445/K 2283 | mm2/s | 6.5 min. |
| Flash Point | D92 or D93/K 2265 | °C | 70 min. |
| Density (15°C) | D1298/K 2249 | g/cm3 | Report |
| Pour Point | D97/K 2269 | °C | Report |
| Colour (visual inspection) | D1500 | Report | |
| Sulphated Ash | D874/K 2272 | % mass | 0.18 max. |
| Phosphorus | D4951/JPI-5S-38-92 | % mass | Report |
| Nitrogen | D4629/K 2609-1990 | % mass | Report |
| Sulphur | D2662/K 2541-1992 | % mass | Report |
Engine Testing (JASO FD)
| Evaluation Item | Test Method |
JASO FD Standard Index |
| Honda Lubricity (LIX) | JASO M 340 | 103 min. |
| Initial Torque (TIX) | JASO M 340 | 98 min. |
| Honda Detergency (3 hour) DIX | JASO M 341 | 110 min. |
| Piston Skirt Varnish (VIX) | JASO M 341 | 100 min. |
| Suzuki Smoke (SIX) | JASO M 342 | 85 min. |
| Suzuki Blocking (BIX) | JASO M 343 | 90 min. |
The significance of the index numbers:
The numbers for each evaluated item, i.e., Lubricity, Initial Torque, Detergency, Smoke and Blocking are all index numbers which are associated with performance in each category. Basically, the higher the number, the better the performance in that category.
For more information on JASO FD, contact your Lubrizol representative.