Ducati Sporting Club UK
 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-Apr-2004, 16:06
Shazaam!'s Avatar
DSC Member Shazaam! Shazaam! is offline
DSC Club Member
Big Twin
 
Posts: 1,167
Join Date: Nov 2001
Your oil viscosity selection chart in your owners manual tells you to change to a thinner oil if the expected outside temperatures are lower. Adding an oil cooler essentially shifts this chart, so that now you’ll need a thinner oil for the same riding conditions. Under severe conditions found at the track, an oil cooler allows you to keep the maximum temperatures down, but under street conditions the oil temperatures will drop below the values that the chart serves to promote.

As you can see from the chart, a single modern motor oil with viscosity enhancers can be used over a wide range of ambient temperatures and still maintain adequate oil pressure. So it’s not a sensitive parameter.

During an engine’s development time on a dyno, the oil temperature is monitored to avoid temperatures above 260ºF and below 200ºF to avoid oil breakdown at the high end and excessive pumping losses (and higher pressures) at the low end. These dyno runs are simulations of street riding conditions, but not representative of more severe heat loads during actual track conditions.

So, if you modify your oil cooling system you should monitor your oil pressure and adjust your oil viscosity to assure adequate - but not excessive - oil pressure under all riding conditions. See your service manual the correct cold idle, hot idle, and running operating pressures.

[Edited on 4-12-2004 by Shazaam!]
Quote+Reply
  
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes
Postbit Selector
Switch to Vertical postbit Use Vertical Postbit

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Recent Posts - Contact Us - DSC Home - Archive - Top
Powered by vBulletin 3.5.4 - Copyright © 2000 - 2025, Jelsoft Enterprises Ltd. - © Ducati Sporting Club UK - All times are GMT +1. The time now is 17:28.