Originally Posted by codprawn
In the states many people uses synthetic gear oils becuase they are better than normal grades - especially in racing - they aren't "marine grade"!!!
Having spoken to the tech dept of a major oil supplier I was told that there is no difference - but not in so many words.............
Cod you got both issues right, about that synthetic could be used and "there is no difference - but not in so many words" besides no Company will ever tell you that their oils are good quality recanned ones bought from reputed Companies. Is a must "marine" issue that has to be sold to clients.
As one stated, if cannot buy a can of Quicksilver oil, must not be boating, must say that Mercury/Mariner are no longer on the outboard bussiness down here, so no products available. So have to look for an alternative best transmission oil available. The quoted price is the final end distributer price, not street price, so cheap buy for me, doesn't mean it's poor lub quality. Feel free to use any lube you want to.
If you leg is water leaking, and not detected on time, no matter which oil you'll be using will ruin your complete gear box fast, so it's a good issue if you have the available time and know how to do it, each 50 hours, ckeck level oil if ok, add if needed, or detect milky oil. (you are a luky man, detected on time, time for minor gear box repair).