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      05-20-2021, 01:46 PM   #756
Assimilator1
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Drives: BMW M3 e92 08 & 330d e90 10
Join Date: Sep 2019
Location: UK, Surrey

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2010 BMW 330d  [8.00]
2008 BMW M3  [0.00]
No need to run the engine without firing also. That's personal choice. I did not.

I think it's far more preferable to crank the engine without it firing, at the least when using oil to prelube the shells. That extended rattle (compared say to doing an oil and filter change) you get before oil pressure builds up can't be good, and I'm fairly sure the manufacturers advise to crank the engine before firing it up too.
And, at the end of the day, it isn't hard to do.

I don't think either of our engines will have suffered any serious damage though, but I'm still kicking myself that mine fired up when I didn't want it to (I thought the fuel pressure would have bled off over the time it had sat, but nope!). Hopefully they'll be no significant affect from that....
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