Fully synthetic or not.

[Tev62]

"Bob is the oil guy" - lots of mentions of the CB1100 on this subject. 10W-30 and 15W-40

http://bobistheoilguy.com/forums/threads...il.369288/

I just find it awfully easy to choose the spec. the manufacturer states, it takes all the guessing out of it. I find the biggest impact on my bike for gearbox smoothness is the correct adjustment of the chain slack.

I believe that is actually the info that I referenced when I made the oil/oil filter cross reference table thread for members. Lots of info on that site

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca
https://cb1100forum.com/forum/showthread.php?tid=14295

This was the thread. In hindsight I don't think i used the proper verbiage to explain why the 10w-50 is used over 10w-30 according to my bike shop.. but I was just trying to relay the info at the time lol.

The list of filter serial numbers should still be accurate though

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca

I believe that is actually the info that I referenced when I made the oil/oil filter cross reference table thread for members. Lots of info on that site

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca
https://cb1100forum.com/forum/showthread.php?tid=14295

This was the thread. In hindsight I don't think i used the proper verbiage to explain why the 10w-50 is used over 10w-30 according to my bike shop.. but I was just trying to relay the info at the time lol.

The list of filter serial numbers should still be accurate though

2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca
It's not a bad conversation and interesting he found a difference between his two bikes.