Re: 4 stroke vs 4 cycle oil-what's the difference
I went on goggle and searched vendor. From what I can see is that one is for conventional marine engines and one is for outboards.
QUICKSILVER 4-CYCLE ENGINE OIL - 946ml [32fl oz][1 qt] 108LUB802837Q
Quicksilver 4 cycle (or 4 stroke) marine engine oil keeps your engine cool when the going gets hot. Multi viscosity 25W-40 oil that you can run during the boating season. Used regularly, it will reduce engine wear and corrosion and protect against chemical attack, keep pistons clean, prevent rings from sticking and inhibit rust and sludge deposits
QUICKSILVER 4-STROKE OUTBOARD OIL - 1 LITRE [33.8fl oz] 108LUB802833Q
Formulated specially for 4 stroke outboards. Outboards typically operate at 5000-6000 RPM at wide open throttle, almost twice as fast as 4 stroke automobile engines. Normal automotive lubricants are not formulated to handle thse speeds. Quicksilver 4 stroke outboard oil contains special additives making it ideally suited for this application. They help reduce wear, scuffing and scoring, prevent the formulation of rust and sludge and inhibit the formulation of unwanted damaging foam