Contact Overland Solutions for all your custom modifications and setup for overland travel.               Discover the extraordinary with Compass Expeditions.

Go Back   The HUBB > Technical, Bike forums > Tech
Synthetic oils in older bikes Synthetic oils in older bikes
Register FAQ Calendar Search Today's Posts Mark Forums Read

Tech ALL bikes: "Generic" tech questions and answers. Maintenance, general discussions etc.
With more than 58 destinations worldwide, Edelweiss Bike Travel is Number 1 in guided motorcycle tours!
Reply
Page 2 of 2 1 2
 
LinkBack Thread Tools Display Modes
  #16  
Old 12 Sep 2009
HUBB Advertiser
HUBB regular
  
Join Date: May 2009
Location: Cornwall, England
Posts: 39
Quote:
Originally Posted by oldbmw View Post
It may not make sense, but it happens far too often to be ignored. BMW rear engine seals are particularly prone to this senseless event.
It could be PAO Synthetic as this tends to shrink seals. Some of the higher end companies like Silkolene and Motul add Esters to the PAO as they swell seals which negates the effect.

Cheers
__________________
www.opieoils.co.uk

Horizons Unlimited members get 10% off at Opie Oils
Reply With Quote
  #17  
Old 12 Sep 2009
Contributing Vendor
Veteran HUBBer
  
Join Date: Apr 2006
Location: Tallinn, Estonia
Posts: 978
Quote:
Originally Posted by oilman View Post
These days most oils mix but mixing a quality synthetic with a mineral oil is sort of defeating the object of putting the better one in.
Thanks for the answer.

Re above. I was not thinking of mixing the two intentionally, but rather, if I did change from mineral to synthetic, and possibly back again at a later date (if supply/finances demand it), some of the oil that was in the engine prior to it being drained, will inevitably mix with the new oil being added.

This is the scenario I was referring to.
__________________
Adventure: it's an experience, not a style!
(so ride what you like, but ride it somewhere new!)
Reply With Quote
  #18  
Old 12 Sep 2009
Registered Users
Veteran HUBBer
  
Join Date: Feb 2006
Posts: 1,297
Quote:
Originally Posted by Warthog View Post
Thanks for the answer.

Re above. I was not thinking of mixing the two intentionally, but rather, if I did change from mineral to synthetic, and possibly back again at a later date (if supply/finances demand it), some of the oil that was in the engine prior to it being drained, will inevitably mix with the new oil being added.

This is the scenario I was referring to.
It is no problem, what you will have in your engine whichever way you do it will be semi synthetic
what you dont want to mix is castrol R or any other veggie oil with mineral or synthetic. Note semi (as in semi synthetic) does not mean half and half.

The way oils are graded can be very misleading. Unlike nearly everything else the grades refer to a maximum that the oil does NOT meet. For instance SG rated oil can have a maximum of 0.12% of zinc. SL 0.10%.
So if you had a 45 gallon barrel of 0.000001% zinc (or none) mineral oil, you could put a drip or two of synthetic in the barrel and legally sell it as semi synthetic SG rated oil.
It meets the specification, because it has LESS than 0.12% zinc (zddp).
Reply With Quote
Reply
Page 2 of 2 1 2

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
Display Modes
Linear Mode Linear Mode

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Opie Oils UK - discount on name brand oils for HU Members Grant Johnson Tech 10 4 Weeks Ago 08:53
buying motorcycle insurance for older bikes ifdale South America 1 11 Jan 2009 05:59
oz/nz no carnet for older bikes ? bryan Australia / New Zealand 2 30 Sep 2003 06:39
oz/nz-no carnets for older bikes? bryan Trip Paperwork 0 5 Jun 2003 17:07
Synthetic oils for desert use Andrew Baker 4WD Overland Tech 9 28 Mar 2003 12:08


All times are GMT +1. The time now is 09:11.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top