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<x-charset iso-8859-1>That's excellent info, thanks mucho ----- Original Message ----- From: "King, Robert" <Robert.King@dsto.defence.gov.au> To: <type3@vwtype3.org> Sent: Tuesday, March 19, 2002 2:18 PM Subject: [T3] GL5 - MT1 safe for VW trannies > Greetings All, > > I live over on the vintagebus list but do read the Type 3 archive. > > I noticed a recent thread on the GL4 tranny oil requirement for VW's > and thought I'd send you a post..... > > GL4 in a 90w is impossible to find in Oz (well I couldn't find anything) > and I was using a Castrol 75 w 80 GL4 (from motorcycle shop of all things) > in my recently finished 23 window resto > for fear that a GL5 would eat the syncros. Wasn't perfectly happy > with that weight as I thought it was a bit light for the diff... > > Started checking around and there is a 'new' standard for GL5 > which is GL5 - MT1. Penerite here in Oz has a 80 w 90 GL5 - MT1 > available and the manufacturer swore that it was suitable for > (in fact developed for) trannies with copper/brass/bronze components (Copper > alloys). > Even says so on the back of the bottle! > > Being a bit suspicious of the manufacturers information I delved a little > further > into tech specs and the MT1 rating DOES mean that the oil > must meet ASTM D130 "Stability in the presence of copper > and copper alloys"..... > > It looks like 'modern' GL5s with the MT1 rating are OK for VW trannies. > I'm not saying I'd go with it if I could buy a 90w GL4 or even something > like Redlines synthetic MT90. BUT if you can't readily access oils with > these > weights and ratings it looks like GL5 - MT1 is OK.. > > I changed to it on the weekend and the bus is happier > with the higher weight..... > > RobK > > http://www.splitbusaustralia.com > > > > > > > > ------------------------------------------------------------------- > Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe > > </x-charset>