I did the first oil change on my 3510 the other day and had somethng happen that has never happened to me before and I have changed thousands of oil filters since 1957. After changing the oil and filter I started the engine to check for leaks. With the engine idling I jumped down to look and everthing seemed fine, no leaks and the engine purring like a kitten. After about maybe three minutes or so all hell broke loose. Oil spraying from around the gasket at an amazing clip. I shut the engine down and checked to see if I had forgotten to tighten it enough and it was tight. (As tight as I could turn it with my bare hands). I reinstalled the original filter, poured three more quarts of oil back in(shows you how fast it squirted out) and restarted the engine. No leaks and I'll bet I let it run for 10 minutes, After looking the leaker over real close and finding nothing visibly wrong I reinstalled it and the samething happened. No leak for about a minute or so then whammo. This is a dealer filter and when I reported this to them they claim they had never had any probs. and are replacing the filter. Any ideas/