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Back from Boise, Idaho (I-84 was pure Hell, but more on that later...) and catchin' up on the email. Yes, synthetic oil is recyclable. I tell the dudes where I dump it that it's synthetic. I've been using synthetic oil and blends for well over two years (maybe three) and have had no problems due to its usage. My 914 runs pure synthetic. For my trip to Boise I filled up with Castrol synthetic 20w-50w. My baby is still at the full mark and starting her was never a problem. Temperatures for the whole trip varied from 50F to 20F (degrees Fahrenheit). Oil pressure was always in its proper range for my engine. Synthetic oil contains a polymeric plastic substance which helps to *thicken* the oil at *higher* temperatures. At lower temperatures the oil is naturally thinner. Here's a reason for you cold climate dwellers to use synthetic oil -- easier engine starting in the cold, yet proper thickening to keep the stuff from leaking all over your engine compartment once your baby is warmed up. If anyone is still unsure about synthetic oil and you think it's just as good as conventional oil then 1) You're wrong, and; 2) If you do some research like I did you will see how much better the stuff really is. Remember, technology is our friend :) Toby Erkson, Portland, Oregon air_cooled_nut@pobox.com modified '72 VW Squareback 2.0L stock '75 Porsche 914 1.8L ______________________________ Reply Separator _________________________________ Subject: Re: Synthetic oils (same theory for trannies!) Author: type-3-errors@umich.edu at SMTPGATE Date: 12/21/96 5:25 PM Nicole Gray wrote: > > Just a question about the "costs" of synthetic oils: are they recycleable? > > Rich > 71 Bus > 69 Squareback If you dump it in with the regular used oils, it should eventualy become a recyled Fuel Oil #2 or #3. I'm fairly sure that the Synthetic Oils are just highly specific groups of HC chains (based on chromatograph fingerprints). (I'm suppose to help keep this stuff (petro) out of people's water supplies in NC). However, if there are aftermarket solvents in the oil, it should be considered a haz waste, and dropped off at at community pick-up location. -- Dan Hirth Raleigh, North Carolina dhirth@mms.net 69 fastback