i recently bought a 2005 rk classic from dealer, when i got it it has 29000 miles, the dealer said man had just changed all fliuds before the trade in, but they had no clue to what was run in it, (brand, syn or not etc.) so i want to know is it safe to run a hd micron 5 filter and mobil 1 full syn in all three holes like the bottle says it can do?? or should i run harley formula + in tranny AND primary and just run mobil in motor?? dealer told me that mobil 1 was great oil as there syn 3 was great also, that todays oils were built to perform in extreme conditions, like the hd motors. i want to run full syn in all the holes but value you guys opinions. the mobil vtwin 20 -50 says it'll run in all three holes, should it be trusted is the question?