Re: Lower Unit Lube
To be clear, you said " 80-90w gear lube" which is entirely different than lower unit oil, you may have meant lower oil but you didn't say it and my telepathy is on the fritz this week.
And the price was an example to illustrate a point, the correct oil is much cheaper than a new lower, yes I know they cost more than that although I have purchased a used lower with a new prop for $145.00, been running it for 4 years now.
And no, I do not work at junk yard, I build extremely high quality pontoon boats and am a TIG welder by trade.
I would suggest when giving advice be sure you say what you mean, the wrong advice could cost someone hundreds of dollars, like using gear oil instead of lower unit oil.