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Hey all, I got this response directly from Pennziol.... now it is clear...the GL-5 is just TOO good, which is bad for us...by the way I found GL-4 at Carquest, its their house brand... __________________________________________________ Do You Yahoo!? Yahoo! Health - your guide to health and wellness http://health.yahoo.com X-Apparently-To: illusioneer_ken@yahoo.com via web21107.mail.yahoo.com; 01 May 2002 10:06:04 -0700 (PDT) X-Track: 1: 40 Return-Path: <damon.mccleland@pzlqs.com> Received: from houmsghb13.pennzoil.com (208.242.86.220) by mta303.mail.yahoo.com with SMTP; 01 May 2002 10:05:59 -0700 (PDT) Received: by HOUMSGHB13 with Internet Mail Service (5.5.2653.19) id <JZSRLPKG>; Wed, 1 May 2002 12:06:01 -0500 From: "McCleland, Damon" <Damon.Mccleland@PZLQS.com> To: "'illusioneer_ken@yahoo.com'" <illusioneer_ken@yahoo.com> Cc: Inet-Site Information <Info@PZLQS.com> Subject: FW: GL-4,GL-5 Date: Wed, 1 May 2002 12:05:59 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Content-Length: 1314 <x-charset iso-8859-1>Thank you for your interest in Pennzoil - Quaker State products,API GL-4 and API GL-5 products typically use the same extreme pressure (EP) additive system, with the API GL-5 having about twice the concentration of a API GL-4. In service, these additives become active under extreme load and temperature when the protective oil film can be squeezed away. EP additives work by forming wear-resistant compounds with the metal of the gear tooth surface. As the gears mesh, these compounds shield the gear teeth from direct metal-to-metal contact that would cause wear and damage to the gears. If too little of the active additive is present, proper protection would be compromised. Too much of this additive could cause excessive chemical corrosion of the gear surface. If an API GL-5 gear oil is used in a application where API GL-4 gear oil is called for, chemical corrosion of "yellow metal" components may occur, such as bronze synchronizers, brass bushings, etc. This may lead to shifting difficulties or shortened equipment life. Damon M McCleland Consumer Products / Technical Support -----Original Message----- From: Weidler, Grant E. Sent: Wednesday, May 01, 2002 9:51 AM To: McCleland, Damon Subject: FW: GL-4,GL-5 I think we talk about this on the www.pennzoil.com site under the FAQ's. -----Original Message----- From: Inet-Site Information Sent: Wednesday, May 01, 2002 8:25 AM To: Prd Mkt-Tech Services Subject: FW: GL-4,GL-5 Please respond to customer inquiry. Thank you. -----Original Message----- From: Ken Simons [mailto:illusioneer_ken@yahoo.com] Sent: Saturday, April 27, 2002 1:41 AM To: info@pzlqs.com Subject: GL-4,GL-5 Hey all, I have a question reguarding your gearoil... My question is this...is the '85-90W' GL-5 safe for my old Volkswagen transmission with BRONZE ALLOYS in it?...from what I understand I need 'GL-4' NOT GL-5...does the GL5 supersede the GL4? And IS SAFE for bronze alloys?... Thanks for your quick response as I wish to do this right away (this weekend) and not ruin my tranny... Also if you could send me something nice and clear while still being technical, I would like to (with your permission) post it on a forum (not assoiated with VW) so all of us old aircooled fans can know once and for all... Thank you Ken Simons illusioneer_ken@yahoo.com 503.647.7731 __________________________________________________ Do You Yahoo!? Yahoo! Health - your guide to health and wellness http://health.yahoo.com </x-charset>