I know there is still a lot of driving time left in NE but I was thinking out loud and need some advise regarding winter storage. I just changed all three fluids on both of our bikes with Mobil and Spectro. We will most probably drive another 1000 miles or so before winter. I realize we should not store the bikes with old oil, however, dumping syn oil after 1000 miles and then changing oils again in spring seems a like a very expensive proposition (2 bikes). So here are my questions: * For winter storage can I use regular dino oil in engine and transmission. * Dump the dino oil in spring and go back to syn. Any harm * Does the oil filter needs to be changed again in spring it was changed before storage Many thanks to all. Please ride safe. Titu.