E60 m5 Running In

[Dan_M5]

Hello, Does anyone know the running in procedure for the E60 M5, its getting a new crate engine from BMW so just wondering what the driving process is while its new.

[Schermerhorn]

Don't exceed 5000rpm I believe. This will be hard, considering 90% of the power is over 4000rpm.

[likesachange]

Why the new engine? Warranty extension has certainly came in handy here !

[stevesingo]

Don't baby it, unless you want high oil consumption in the future and for ever.

Drive out of the dealer, put it in a fixed gear, use 70% throttle up to 3.5k and then back off until near idle three times. Then same again up to 4k three times, and then up to 4.5k, and again up to 5 and the 6k. DO it all in the first 50miles, then drive it like you stole it.

[Dan_M5]

likesachange said:

Why the new engine? Warranty extension has certainly came in handy here !

Another thread about but in essence 2 new vanos systems, test drive spins a big end crank and bores scored 35k bill

[mikeN54]

Cool - just get them to trash the gearbox for a new one too and you'll have a nearly reliable car!

[thebraketester]

Use high loads but dont redline it to start with for a few hundred. Then tt it.

[Dan_M5]

mikeN54 said:

Cool - just get them to trash the gearbox for a new one too and you'll have a nearly reliable car!

It's having a new clutch while it's all apart anyway. So it should be pretty reliable. Just going to get the bearings changed every 25k now!

[Dan_M5]

thebraketester said:

Use high loads but dont redline it to start with for a few hundred. Then tt it.

Last engine I built got ran in on the dyno being mapped.

[jcolley]

IME with the S85, break-in has very little to do with oil consumption. The rings never really seal against the alusil bore.

The biggest improvement with regards to oil consumption on this motor is to scrap the ste oil control ring BMW used and choose one with a more modern design. I've done this on a few rebuilds now and it helps immensely. BM makes lots of motors with identical bores...

As for break in, keep in mind the DME stores operating characteristics of number of times the motor exceeds various RPM levels. If per chance that is reset with the new motor, it would be apparent to them when you take it back for the running in service. From a risk averse perspective, I would stick to the OEM break-in recommendation if you intend to maintain warranty on it.