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> > I don't think there should be any problem with using synthetic without a > filter. It's using it without a filter and never changing it (like they say you > can do in cars with filters) that would be the problem. In those cars, you just > replace the filter and top up the oil. The problem is using no filter in a used engine with crud in places, once its loose, it just keeps getting flushed through the bearings, and the synth loosens it up. > > Personally, I think you're guessing at the cause of your problem, but there's > no question that you DID have a problem. There IS, however, a known problem > with VW rebuilds, which fits your symptoms. That is crud buildup in the oil > passages, which comes loose after a rebuild. For this reason, some people > recommend that the oil drilling plugs be drilled out so that the passages can > be cleaned. Then the openings are plugged again. I didnt drill the plugs, but I did flush the passages and cooler with the parts washer. The thing is, for the first 10K mi there were no problems, it ran great, had excellent oil pressure and no bearing noise... then as soon as the synth went in the temps would rise dramatically on the highway, and the oil pressure took a dive. 350miles later the dino went back in but the damage was already done. > It's possible that dino oil would not have dislodged this crud, but I think > it's more than likely that the same thing would have happened to you with > either choice. I'm sorry you had to go thru this, and I'm grateful that I > didn't, but at least we can all agree that at least it happened to someone who > was able to deal with it and fix it. I came *very* close to junking the car. If I didnt have a worn out old spare engine I could throw in I would have had to get rid of it, I was a penniless college student at the time who spent his last $$ the summer before on the new engine. > > I just don't think it's fair to blame the crud on the synthetic oil. If the > case had been clean, this would not have happened. Im not sure if it wasnt simply crud that had built up over the 10K that I had driven it, I keep the oil pretty clean but the break in always leaves sludges in places. It certainly could have been something that was left from the engines previous life... and that life did include defective JC Whitney parts :-0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~