'14 BMW M5 110k. I have had a bmw oil change package for a long time and have been doing 4k oil changes between bmw recommended intervals. Recently I decided to do oil changes myself but my oil doesn't seem to last that long.
I have been running liqui moly 5w40 and consistently at about 3k I need to add oil every 500-800 miles. I finished my stock of liquid moly and decided to give Mobil 1 euro 0w40 for this interval. I'm not trying to extend drain intervals, I'd just like 5k between oil changes. I have never sent oil to a lab but just assume it is spent when I need to add makeup oil so frequently.
Is there an off the shelf 5w40 or 0w40 that won't "break down" before it hits 5k? Pennzoil, castrol and Mobil 1 are easy to get my hands on
Regards,
Matthew
I have been running liqui moly 5w40 and consistently at about 3k I need to add oil every 500-800 miles. I finished my stock of liquid moly and decided to give Mobil 1 euro 0w40 for this interval. I'm not trying to extend drain intervals, I'd just like 5k between oil changes. I have never sent oil to a lab but just assume it is spent when I need to add makeup oil so frequently.
Is there an off the shelf 5w40 or 0w40 that won't "break down" before it hits 5k? Pennzoil, castrol and Mobil 1 are easy to get my hands on
Regards,
Matthew