Some Good info that has been floating around:
ISO-L-EGC which is similar to the JASO FC rating.
The ISO-L-EGD+ was created to establish a higher standard of detergency and ability to withstand higher levels of heat. The new test runs for 3 hours vs 1 hour for the previous test.
If a lubricant is certified ISO-L-EGD+ it has passed the most stringent tests set by American, Japanese and European engine manufacturers. Polaris recommends TC-W3 lubricants, Yamaha JASO FC and Ski-Doo/Sea-Doo requires ISO-L-EDG+ lubricants.
None of the three North American snowmobile manufacturers specify use of TC-W3 oil in their owner’s manuals. Bombardier pointedly tells its customers not to use it, recommending API-TC rated oil instead.
Until recently, the top JASO oil rating was FC, and you will continue to see this listed in many places. But the tougher FD rating is now available, and some companies upgraded their products. The JASO-FC standard is also important because it includes a test to specifically measure exhaust smoke. So JASO-FC and the subsequent FD test is the key for visible exhaust emissions.
ISO-L-EGD is the top European two-stroke standard, with EGC and EGB as lower performance levels. A plus sign after the letters (EGD+) means that the rating is significantly exceeded.
Use the oil ratings as a guide, compare costs and availability, and try to stay with one product if possible. Availability becomes a factor for many of us; if you can’t carry enough with you, run something that you can find readily where you ride to fill the gaps.
Plain old TCW-3 won’t cut it in many of the higher-tech engines. Look for JASO-FC (and now FD) and ISO EGD ratings as indicators of a minimum performance standard for the newest, trickest engines. Mod packages may require extra quality and or quantity to provide adequate lubrication; consult with the engine builder or package supplier on what their experience has been.
ISO EGD is the “European” specification that slightly exceeds the “Japanese” JASO-FC. There is a new JASO-FD spec, as the ISO and JASO testing sequences have come closer together with the latest ‘FD’ and ‘EGD’ designations. Previously, the only difference was a 1 hour and 3 hour detergency - lubricity - ring groove - sticking test with JASO-FC and ISO-EGD respectively. Now, they are the same set of tests.
Maxima TundraR, a synthetic blend that is pretty clean burning, ISO EGD
Amsoil Interceptor This fully-synthetic oil is JASO-FC rated (Robert said is good)
Klotz Snowmobile Techniplateit it too is ISO EGD rated
Spectro that is also ISO EGD rated
Blue Marble claims to be ISO EGD rated
ARCTIC BLUE™ Synthetic Blend is qualified internationally: Exceeds API TC or TSC-3 in North America. Exceeds Japanese Automobile Standard Organization new JASO
specification "FC". Meets or exceeds performance requirements of International Standards Organization new ISO Global Specifications "GC" (ISO-L-EGC) and "GD"
(ISO-L-EGD).
Torco Exceeds JASO-FC / ISO-L-EGD / API-TC
Shell Advance Snow Ultra High Performance Synthetic Snowmobile Oil ISO-EGD and the JASO FC standard.
Maxima Lubricants Super-M Injector Oil Exceeds BIA/TC-W, JASO-FC, ISO-E-GD & API-TC specifications
Legend ZX-2R exceeds NMMA (formerly BIA) TCW3, ISO-L-EGB and JASO FB specifications. ZX-2R is a mineral based, synthetically infused blend of superior chemical components designed to outperform the most expensive synthetics.
Legend ZX-2SR exceeds API TC, ISO-L-EGD and JASO FC+ specifications. ZX-2SR is a blend of the finest mineral base stocks “chemically infused” with nano-molecular additive technology.
Royal Purple-TCW-III (Robert said is good)
Citgo SuperGard Sea and Snow. Citgo is Venezuela’s oil company run by Hugo Chavez. The synthetic blend formula meets or exceeds the rigorous requirements of the API TC, JASO FC and ISO EGD classifications for 2-cycle air-cooled engine oils and also exceeds the performance requirements for JASO FA, JASO FB, ISO-L-EGB, and ISO-L-EGC. The JASO FC Certification Number is 001 CGO 535. SUPERGARD Sea and Snow is formulated primarily for use in snowmobiles and personal watercraft. It can be used in motorcycles, generators, lawnmowers, and hand held power equipment such as leaf blowers, trimmers, and chainsaws.
