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Black Oil Advice needed
Morning Alan Welcome to the Forum Makes you wonder about the service book is it really for the same car? Then again with extended service periods the oil will get very black and thick. If the engine is running well first job would be drain some oil then add an engine flushing agent run the engine to clean as much crud as possible then drain and new filter, add cheap oil and more flushing agent and repeat after a couple of flushes it should be much cleaner inside then Filter and a Good Oil Dave -
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Black Oil Advice needed
I am looking to buy a B47 engine. I have found a X3 with 72k on clock with very good BMW service history according to the in car service record. It has 10 stamps roughly one a year. Generally the car appears mechanically sound. But when I check the oil it is jet black, like nothing I have ever seen before. No translucency at all. According to the service record BMW changed the oil 7 months ago at 68k. Is it normal for the oil to be this black after only 4k miles? . -
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Refitting N47 crankshaft pulley/damper
Morning Oliver When I rebuilt my 4.6is there was enough room to get a Stilson pipe wrench on the boss at the back of the pulley. That worked for me As you will be fitting new belts another tip is wrap the old belt around the pulley and clamp it tight with a pair of Mole grips the loose end of the belt clamp to the front subframe that should give enough of an anchor to torq things up don't reuse the old bolts as they are already stretched. Good Luck Dave -
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Refitting N47 crankshaft pulley/damper
Thanks Greydog, cardboard angle is a good idea. Any tips on stopping the pulley moving without buying an expensive tool that I will only use once -
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Refitting N47 crankshaft pulley/damper
Hi Oliver There are many bolts that require Torq plus a Degree tightening sequence so best to stick to the sequence or you could over stretch the bolts and end up with them failing I have a 1/2" drive degree tool but you can cut a circle of cardboard and mark 0, 90, 180, 270 off in pen then mark 3 equal sections in each segment. Torque to 40Nm then put your card in place mark the 0 point on the car with tippex. Now you can turn the bolt 90 plus one segment (30d) for your 120d, always tighten in a diagonal pattern Dave
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