[Tpeterson]

Originally Posted by 123Britt

SO, I have learned and realized that the oil in a BMW DI engine must be changed often with oil that runs super clean. AKA SHELL oil from gas with an NOACK of 6.8 and runs super clean. Mike Miller has stated that BMW DI engines need to be run hard to help burn off some of the tar type gunk, OCI at 5k & with an oil that runs super clean (SHELL / PENNZOIL) 5W-40 runs cleaner that the Pennzoil 0W-40. REDLINE 5W-30 is another good one but lacks LL-01.

A reader asked Miller a question in Bimmer Tech Q&A about oil catch cans in the crank case ventilation system to also keep the dirty, oily air out of the intake system.He never answered it,but it seems like it would help.

[123Britt]

Burger Tuning & Rob Beck Turbo have both concluded ( I believe) that the N55 does not need an OCC for the latest versions of the engine as well as the PCV valve (good) . So, I am just going to stick with the PP EURO 5W-40 but with a 5-6k OCI . I will inspect the intakes at 50k and access their condition.
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I would think a tuned N55 would require a more stringent maintenance plan and a OCI of 5k would be very key.
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I don't get free oil changes -- purchased the car used at 15k and MY 2015 the maintenance plan did not transfer. So - I have stocked up on Mann Filters and PP oil -- looking forward to long term ownership

[amw896]

should sticky this post

[Solarphil]

Originally Posted by Beartato

Do you have any actual proof (not anecdotal or speculation) that doing additional maintenance outside of scheduled service actually prolongs any component in our N55 cars?

Not trying to be difficult, but the only justification for doing all the extra maintenance is the contrast between owner paid vs free maintenance itself.

Look at the resale value of an off-lease BMW versus a similar car maintained the "old school" way.

[Beartato]

Originally Posted by Solarphil

Look at the resale value of an off-lease BMW versus a similar car maintained the "old school" way.

Examples? A former lease is always going to take a ding in resale, regardless of brand.