Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-23-2015, 07:33 AM   #26
Registered User
 
Join Date: May 2014
Location: S.California
Posts: 2,029
There are lots of oils with high ZDDP. Excessive ZDDP will 'poison' the cats. So 'more is better' has limits.For example, Mobil 1 5-40"Turbo Diesel"has more ZDDP than regular Mobil 1.
The question is the balance in the additive package.

I linked an old comparative list some time ago from BITOG for film strength and ZDDP. Motorcraft 5-50 was surprisingly good in that comparison JGibbs was included in the list.
But there is way more to the issue than just two factors in the additive package.
11. 5W50 Castrol Edge with Syntec API SN, synthetic, formerly Castrol Syntec, black bottle = 75,409 psi
zinc = 1252 ppm
phos = 1197 ppm
ZDDP = 1200 ppm

8. 10W30 Joe Gibbs HR4 Hotrod Oil synthetic = 86,270 psi
zinc = 1247 ppm
phos = 1137 ppm
ZDDP = 1100 ppm

3. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phos = 1544 ppm
ZDDP = 1500 ppm

For the oil Geeks only:
http://speedtalk.com/forum/viewtopic.php?f=1&t=35836
http://www.intellidog.com/dieselmann/powers~1.htm
http://www.machinerylubrication.com/Read/255/oil-foam
http://www.bobistheoilguy.com/motor-oil-101/

Last edited by Gelbster; 03-26-2015 at 11:09 AM.
Gelbster is offline   Reply With Quote
 


Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 08:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page