I'm only concerned about going to a multi-grade because the owners manual said to NOT use any multi-grade. I think I'll end up going with the Delvac since it's so much cheaper and others seem happy with it.
That's the general information I've found on forums such as iboats. I have only had this boat for about a month, so I'm personally feeing a bit like a fish out of water as an ex-auto mechanic.
Regarding multi-grade oil, I'm extra apprehensive because I have the original owners manual which say...
Volvo Penta discontinued their SAE-30 SG/CE which is recommended in my Volvo Penta 4.3L GS powered Four Winns runabout. There was some discussion on what a suitable replacement would be, but nothing definitive. I called three dealerships and they all said something different. (any marine Full...