[NSRCA-discussion] OS160 Longevity

[DaveL322 at comcast.net]

I (and many others in the northeast) have been using S&W w/ 2% Castor and 17% synthetic (Klotz) in all engines for close to 20 years - YS 2C and 4C, OS 2C and 4C, Webra 2C, ST 2C.  And for the majority of that time, running dry at the end of the day, and lubing w/ Mobil 1 synthetic or Amsoil MP.

Never a problem with diaphragms, pumps, or varnish buildup.  After a long period of rest, there is occasionally some added drag on the bearings, or (apparently) a little bit of build up in the pump/fuel supply requiring a richer needed for a couple minutes.  Bearing life and general corrosion/coloration in the engines is definitely better using the 2% castor.

Like Matt K said....find something that works and stick with it.

Dave

-------------- Original message -------------- 
From: vicenterc at comcast.net 

What is the effect of castor oil on the pump diafragm?  I understood that we can not use Castor oil in YS because of the diaframs and regulators parts.  I am not sure now if castor oil couls cause similar problems in OS 140 RX pump and the and the Perry pump.  

VB

-------------- Original message -------------- 
From: Ron Van Putte <vanputte at cox.net> 

> 
> On Dec 17, 2006, at 9:47 PM, Zoro1024 at aol.com wrote: 
> 
> > I think you may be correct Wayne, I wouldn't run castor in a YS, 
> > but wouldn't run the OS without it. 
> 
> I've been running an OS 1.40RX for two seasons and never use castor 
> oil. However, castor oil vs synthetic oil is like religion: you 
> don't question the other's preference. 
> 
> Ron Van Putte 
> 
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> NSRCA-discussion at lists.nsrca.org 
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