Re: Shell Nautilus two cycle oil - Good or bad?
A lot oil's you see out there are Shell base stocks anyway with an additive package in them, not all but a lot. Any TC-W3 rated oil, is well above anything intended to go through your engine in 1972, and is more than adequate, you will be fine with anything that is sold today, as long as it's TC-W3 and NMMA rated. I buy the Wal-Mart Super Tech for $6 a gallon, it's Shell base stock, TC-W3 and NMMA rated and works fine. Decarb your engine once a season or every 50 hours and you'll be fine.