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<x-charset iso-8859-1>When our cars were built the specifications were commensurate with the times, but now 30+ plus years down the road the specifications and technology have merged. There may be somebody on the list who can answer this in more detail, but the difference between GL-3, GL-4, GL-5 may only be the additives package added to the base oil. With today's technology it's quit possible to blend an oil with an additive package that would provide satisfactory service in all applications. Just a thought. > After hearing from Jim, I went to a FLAPS & the major majority of what they > have is synthetic & GL-5. There were one brand that had a GL-3, GL-4, GL-5 on > the bottle. Yes, GL-4 is hard to find in "user friendly" qualtities. I don't know first hand what the problems with GL-5 in our trannies might be and I have simply chosen to accept what the manual and my oil distributor say about this. I've seen the multiple spec on bottles, too, and I agree that this is confusing. I wish I had an answer for you, but I don't. I just think the potential for disappointment is so large that I just try to stay out of trouble. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe </x-charset>