oil change

Will 10w-40 or 20w-50 work on my 1982 xj650?

 

Use 20-50 motorcycle oil with out friction modifiers

 

so 10w-40 wont work?

 

10W-anything is not a good idea in warm weather.

Yamaha specifies 20W40 for anything above about 60 degrees; since 20W40 isn't that easy to find, you can use 20W50. Motorcycle oil; not car oil. And it's best to avoid synthetics.

 

Ya I just went ahead and bought 20w50 valvoline.

 

Motorcycle oil, right?

If you find the FRAM CH6003 filter; they come with both o-rings. Around here (MI) Advance Auto usually has them on the shelf, O'Reilly's is a 50/50 shot, and AutoZone a complete crapshoot (although the 'Zone carries Castrol 4T M/C oil for cheap and usually has NGK plugs.)

The dealer will charge you $14~$18 for a $5~$7 filter.

 

Ya motorcycle oil. I had a Emgo filter that the PO gave me. I wonder if the k&n filter is worth a shot?

 

K&N oil filter? Sure, good product. The only reason I recommended the FRAM is because it comes with both o-rings.

 

http://www.thefirstsyntheticoil.com/Files/g-2156.pdf
Interesting article. The drawback to the results is that it barely touches on wet-clutch performance.
I was going to replace my clutch plates before next spring, am tempted to
postpone it and try either Mobil or Amsoil.
The results in different categories are so mixed,it is difficult to really compare. But if the clutch plates slip with the expensive juice I'll go back to Castrol/Valvoline and keep up with frequent changes.

 

The effect of synthetics on the clutch varies by condition of the clutch, etc. An original clutch in a 30 year old bike should have its plates and springs replaced regardless.

The real drawback to synthetics in our bike is its known potential to affect the STARTER clutch.

 

Amsoil made my starter clutch slip so bad it was simply luck that I could get the bike started after many, many attempts.