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RE: BMW E63 630i bad start and oil leak fix project
BTW its very complicated engines with some mileage ,and one of the problems is carbon and other dirt built inside the engine .Removing parts from the engine its very difficult to get all this dirt out ,the built dirt can fellt apart in small bits and peaces and make trouble in valvetronic and vanos system ,blocking very tiny oil delivery channels ,these could cause engine miss fire ,engine management fault light on the dash and only good run on motorway and oil with filter change after ,when dirt will be stuck in oil filter will make your engine road worth again !
So dont do long life oil changes ,make them shorter as possible and use good quality oil!And do give your car a blast as much as possible , they made to be driven ,not rolling down the road!!
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