[Fot] Oil Question - No LBC content

[Randall Young]

>  I have several older motorcycles whose manufacturers 
> recommended oil  
> weights that I can no longer find. Example; My "85 Virago 700 
> should have 20W-40  
> according to Yamaha. I can get 10W-40 or 20W-50. Which number 
> is more  
> important, the first or the second. 

I'm no expert, but IMHO getting the right additive package is more important
than the right 'weight'.  If 20W40 was originally recommended, then I
believe that either 10W40 or 20W50 would do fine.

That said, the second number is more important, because that's where the oil
will operate most of the time.  The first number, in effect, only comes into
play at cold start.

Randall 
(Tedious but unavoidable disclaimer follows) 






CONFIDENTIALITY. This electronic mail and any files transmitted with it may contain information proprietary to NavCom Technology, Inc., or one of its affiliates, and are intended solely for the use of the individual or entity to whom they are addressed, shall be maintained in confidence and not disclosed to third parties without the written consent of the sender. If you are not the intended recipient or the person responsible for delivering the electronic mail to the intended recipient, be advised that you have received this electronic mail in error and that any use, dissemination, forwarding, printing, or copying of this electronic mail is strictly prohibited. If you have received this electronic mail in error, please immediately notify the sender by return mail.