Oil Recommendation for 1985 XJ Maxim X

I am a new XJ owner and would like a recommendation on a brand and type of oil to use in my 85 Maxim X. Is synthetic the way to go and if so which brands would you recommend. Thanks.

 

Go with motorcycle-specific oil, it doesn't have the friction modifiers that car oil do. The car oil can make the wet clutches slip. I just picked some up at Advance Auto, it's Valvoline motorcycle-specific 10W-40. At $3.88 a quart, it ain't cheap, but at least I know it's right.

 

I've used 20/50 Valvoline for over 10 years with no problem, once winter hits I will drop to a lower viscosity.



80 XJ650G
05 YFM660

 

I'm a Castrol 20/50-Man.

I'd endorse Castrol's racing blend without hesitation. I dump it every 25-hundred to three thousand miles for a nice fresh load. The bikes seem to love it.

I still have great compression on the 900 after 65,000 miles. I need it in the 750 Max, because she and I have been scortching the blacktop shortly after getting the license plate bolted-on, earlier this seson.

I have really been leaning-on-it some. With the 20/50 protection; I know everything turning at high speeds is being lubed nice and the level in the sight glass isn't about to deminish when it's been run hard and heated-up good.