Quite a long list - I see that pennzoil is actually owned by Shell - us Brits get everywhere!
Remember the type of oil has a lot to do with emmissions and the environment - castor straight would prob do an even better job but wouldn't want to risk it.
Mercury seem to say that you can use normal TCW3 oil in the optimax but you can't use the optimax oil in a normal efi outboard!!!! Probably due to high detergent levels
For outboards that require a 50:1 premix of oil/gas we've put together the following chart to simplify the calculations.
Only use 2-stroke outboard motor oil with a NMMA (National Marine Manufacturer's Assoc.) certified rating of TCW3. Never use automobile motor oil in your 2-stroke outboard!
TLDI outboards should only be run using TCW3 oil specifically formulated for use in Direct Injection motors. Standard TCW3 oil is not recommended for use in TLDI outboards. The following oils have been tested by our factory and certified for use in TLDI motors:
Tohatsu Marine Premium Oil
Nissan Marine Premium Oil
Pennzoil Complete Marine Synthetic
Pennzoil Semi-Synthetic Outboard Oil
Mercury Optimax/DFI Oil
Yamaha Yamalube 2-M Semi-Synthetic Injector Oil
Bombardier RAM Ficht Oil
The above oil brands are currently the only brands that have been tested and approved by our factory for use in TLDI systems. Brand names listed are trademarked by their respective owners