I just picked up a beautiful 93 20hp 2stroke merc that runs on a 50:1 oil mixture and i was wondering if anyone has ever ran the amsoil or any full synthetic oil at say 75 or 100:1 in a 2stroke outboard besides yamaha to run a bit cleaner.I know amsoil makes a 100:1 oil that claims you can run in any 50:1 2stroke and will run perfectly,safely and much cleaner/less carbon build up with no ill effects.I'm in no way saying i'm doing this or i will do it i just was wondering for so many yrs how a yamaha 2stroke can run safely on a 100:1 mix but no other 2stroke can.Is the yamaha built with different parts or specs? This is just a curious question.Also i know tons of people who run a 100:1 mix in their yamaha and it has lasted forever but i know some people say never to run anything less than a 50:1.I know the whole story about why they changed it yrs ago with johnson and all that good stuff but i have always been curious as to why with todays full synthetic tcw3 oil as good as it lubricates can't it be done since oil has come a long way.So my question is i guess is there anyone running a bit leaner then advertised to keep the carbon down?
Also this is not meant to begin an oil war, i just want to know if anyone has or is doing this with great results/less carbon build up and no ill effects.
Also this is not meant to begin an oil war, i just want to know if anyone has or is doing this with great results/less carbon build up and no ill effects.