For a 1998 Yamaha Seca II, it's recommended to use a high-quality 10W-40 motorcycle oil, ideally one that is specifically designed for wet clutches. Look for oil that meets or exceeds API service ratings such as SG, SH, or SJ. Always check the owner's manual for specific recommendations regarding oil type and change intervals to ensure optimal performance and protection for your engine.
2
I have a 92 seca 2 with a 600cc motor, and it takes 2.6 quarts of oil to fill it up.
0,263 litre 10W30 oil
15w/30 but that is hard to find so I use15w/40
my manual for '82 seca 400 says "Periodic oil change: 2.2 liters / 2.3 us quart .... With oil filter replacement 2.5 liters / 2.6 us quart"
SAE 20W40 type SE motor oil for > 40deg F SAE 10W30 type SE motor oil for < 60deg F
The oil capacity for a 1981 Yamaha Seca 750 is approximately 3.5 quarts (or about 3.3 liters) when including the oil filter. It's important to ensure that you check the oil level with the bike on level ground and after the engine has been warmed up for accurate readings. Always refer to the owner's manual for specific maintenance guidelines.
Engine oil is 10w 40
Chase Rocks
4cycle
10w40
No oil filter, the YZ125 is a 2 stroke.