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E12, E28, E34, E39, E60General discussion and technical help for all year 5 series cars.
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Your Ride: 2006 BMW 525xi
My 06 525xi started complaining it was low on oil, and to add some immediately, so I did. Unfortunately all that was available was a "regular" oil and not a synthetic. So net result is I've got 1 quart of regular oil mixed in with the regular synthetic already in there. Now that I look, the car manual recommends "BMW High Performance Synthetic Oil" but under the hood it says "BMW recommends Castrol". I put in neither.
I am due for a service and oil change and have my appt on Dec 21 to go in. I will probably drive another 400 miles until then.
Is this mix going to blow up the engine?
Is it the end of the world as we know it or am I OK?
"Cells" - no-one said lifetime, it's a limited time/mileage program offered to new car buyers - it's like 3 or 4 years and like 60k mileage on maintenance/service items only. The only thing BMW has ever mentioned lifetime on was on trans fluid and that's being changed back to bi-annual.