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Old 02-20-2019, 11:26 AM
StephenVA StephenVA is offline
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The 3.0 engine needs regular maintenance especially in the valve cover gasket area, the oil separator (CCV) clean, replace all the hoses and clamps or as some recommend replace the system with an alternative, oil filter housing gasket leak, and the vanos seal right above the Oil Filter Housing. All can leak away and you may not see a drop on the ground until the flood, as there is a steel/aluminum plate under the engine that catches a lot of what drips.

Clean your engine (Dawn Dish detergent will do) and you will see for yourself where all the oil is going. I would recommend doing a cyl leak down test to determine the health of the engine (rings, valves, pistons, etc) or a simple compression test if the first test is way to complicated for your DIY skills. These tests will help you confirm that the oil consumption issues are NOT piston rings and cyl wear issues. At this time/mileage it is time to do all the deferred maintenance that allowed you to buy the X5 cheap.

That last part is a guess on my part as you did not mention mileage or time of ownership. If I am wrong, I apologize in advance.
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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
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2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green

Last edited by StephenVA; 02-20-2019 at 11:52 AM.
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