Just for my information on oil to use in 800 intruder

You can use any oil rated for heavy duty, API SJ, SH, SG/CF
I have used Valvoline in my bikes with excellent results
use less expensive oil and change it more frequently,

Hello scamp, if your engine is broke in, rings seated, then there is no problem running synthetic. Synthetic will protect your engine better & will give superior lubrication, smoother gear shifts & easier cold weather start-ups. What you want to avoid is the "friction modifiers & energy conserving" labels. These have been known to effect clutch performance.

Yamalube 20w40 is recommended for your bike. That viscosity is hard to find in other brands.
Mobil 1 Racing 4T 10W-40 meets or exceeds mfrs specs.
Service classifications, API SM, SL, SJ.SH, CF, JASO MA
I hope this helps, & good luck with your bike.

10w-40 should work just fine. I prefer a full synthetic, like Amsoil or Bel Ray. Avoid "energy conserving" oils. They contain additives the clutch won't tolerate. API rating SL/CF,SJ,SH,SG are all acceptable. Happy biking!

10w-40, I'd recommend a full synthetic like Amsoil. Stay away from "energy conserving" oils, they have additives the clutch won't tolerate. API ratings of SL/CF,SJ,SH are acceptable. Good luck!

10w-50 in warmer conditions,10w-40 in cooler conditions. I like the full synthetics, but stay away from "energy conserving" oils. They contain additives that the clutch won't tolerate. API ratings of SL/CF,SJ,SG are safe. Good luck!

Honda has HP4 motor oil in 10-30 or 10-40 depending on climate. Cooler would dictate 10-30, 10-40 for warmer. If you deviate from Honda oil, make sure it's not "energy conserving". These have additives that will affect the clutch performance.An API rating of SL/CF,SJ,SH or SG is recommended. This rating is on all oil labels. Good luck!

Any brand with API SJ, SH, SG/CFd - Ratings

You can use oil with an API rating of at least SG and therefore can use today's oils with an SN rating. The API service rating is basically a classification assigned to signify the oil's ability to reduce friction and oil consumption, improve emissions, and provide better lubrication. The API ratings are backwards compatible, but not vice versa, meaning SN will work for SG but SJ will not work for SM.

Harley-Davidson recommends their 20W50 petroleum based oil for the engine. You can use the H-D Syn 3 20W50 synthetic oil in the engine but I don't recommend it in the primary/transmission area. You can use any 20W50 oil as long as the API rating has a "C" rating for use in diesel engines. Look for the round circle somewhere on the container that had the API initials in it. It should say something like "SJ/CG". What you're looking for the "C" rating. If you wish to use a specific brand of oil, got to their website and look for their recommendations.

In the transmission, Harley recommends their Semi-Synthetic Primary and Transmission lubricant for Sportsters. The lube lubricates both the primary and the transmission on the Sportster. I don't recommmend full synthetic transmission lube on any bike built before 1995 as it will cause the gears to run noisey. In 1995, Harley changed the back cut on the gears and this made use of full synthetic lube more quiet running. Of course, you can use the full synthetic from a lubrication view point. It's just a bit noisey for my taste.

Whatever you use, make sure you go online and check the manufacturer's suggestion for use.

Good Luck
Steve

Suzuki recommends the use of SUZUKI PERFORMANCE 4 MOTOR OIL or an oil which is rated SF or SG under the API (American Petroleum Institute) classification system. The viscosity rating should be SAE 10W-40. If an SAE 10W-40 oil is not available, select an alternative according to the information below: -4°F - 86°F: 10W-30 -4°F - 104°F+: 10W-40, 10W-50 6°F - 104°F+: 15W-40, 15W-50 14°F - 104°F+: 20W-50 Engine life depends on oil amount and quality. Daily oil level checks and periodic changes are two of the most important maintenance itmes to be performed.