Re: 1999 175hp johnson outboard oil?
The only things you need to know is:
1) Your engine requires TCW-III (TCW-3) standard, semi-synthetic or full synthetic two cycle oil
2) semi-synthetic smokes less than regular TCW-III
3) full synthetic smokes less than semi-syhthetic
4) oil brand is of no consequence whatsoever - regardless what someone else said. It it says TCW-III it meets or exceeds the spec for your engine and is ok to use. For what it's worth, I have used them all and never lost an engine. Continue to use Cabelas if you wish. I have used it myself. My last bulk purchase was Pennzoil semi-synthetic at $7.00/gallon. I bought every jug WalMart had at the time.