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<x-charset iso-8859-1>I agree with all that Shad has said about the Dino oil BUT, with the Synthetic: I did 350 miles of testing... in 1989 with the Amzoil synthetic on a good 10K mi stock rebuild... I could not drive over 40MPH on the highway without my oil temp gauge going over 200F when it usually sat at 150-160... AND it ran 14PSI at that speed when it ran 30 or so with the Dino oil... that stuff REALLY heated up and thinned out. I was indeed very surprized as I had expected a Synth to hold its viscosity as you have said... but it didnt! My cooling flaps were open... everything else was working properly and infact when I put the Dino back in thing returned close to normal (not to normal as my bearing clearances were now much greater). Synth may have changed since then... and not all synth is this way but... and lastly... the MAIN reason not to run Synth in an aircooled motor without an oil filter is just that... NO oil filter! The stuff will clean out the motor and oil cooler so well that it will circulate all that crap through the bearings till there gone... happened to me! and I will have a sampling of these bearings in my Show N Tell in Parma... wait till you see the crap imbedded in them. Even the Synth manuf will tell you not to use the product in an engine without an oil filter. Keith > > I have done THOUSANDS of miles of testing with synthetic and conventional > oils over mountains and through deserts with oil temp, oil pressure, and > head temp gauges. Let me assure you - the "synthetics don't cool" stuff is > 100% solid MYTH. Head temp never changes. Oil temp may go DOWN with a good > synthetic oil. And, oil pressure is more steady with a quality synthetic > lubricant. > > The only reason NOT to run them in a VW engine is economics. If you have no > oil filter, you have to change your oil very frequently. Spending large > amounts of money on synthetics becomes questionable for the average person. > If you have a filter, you can typically extend the drain interval and make > back your money. That's the only reason why. > > Take care, > Shad Laws > LN Engineering - Aircooled Precision Performance > http://www.LNengineering.com > > > ------------------------------------------------ > To unsubscribe, E-mail to: <type3-off@vwtype3.org> > For more help, see http://vwtype3.org/list/ > ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/ </x-charset>