UAE_911

Hi everyone,

I'm looking for some advise on a break-in service.

I took delivery of my 991 C2S a few weeks ago and I almost complete the my first 3,200 KMs (1,600 miles). According to my local Porsche dealership, there is no need for any "post-break in" service and they told me that the first service is required only after 15,000 KMs or 1 year (whichever comes first). Also in the user manual, there is no mention of any break in service requirements (or at least, I can't find it).
I'd like to hear people's opinions on whether a break-in service (or at least an oil change) is recommended after 1,600 miles or if I should just follow the dealership's advise.

Thanks!

LexVan

I always do an early oil change on all my new cars. About 1,000 miles.

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Mondrian

+1 & change filter too.

Oil change is cheap - car is expensive - looks good in service record - you feel good for looking after the car.

Only downside is cost of oil & filter change which is nothing.

OMG Noooooo....

I had my changed after 2 weeks and 2500 miles...

There was nothing much in the oil, but when we pulled the filter apart there were a few particles in there.

Worth doing.

BradB

I changed the oil at 1000 miles and, as expected, also found quite a lot of particles. I also get my used oil analyzed just to see how things are going. Clean oil is your friend.

First oil change left this in the filter. It is more obvious in person.

petee1997

I follow Porsche recommendations. Why reinvent the wheel.

shaytun

What is the logic of doing this? Actually interested in knowing since Porsche doesn't recommend it.

chuck911

New or rebuilt, oil should be changed at about 25 to at most 100 miles. This is when you change from the mineral oil you put in to seat the rings to the Mobil 1 that will be used from now on. Or better, you could stick with mineral oil at 25-100 and change to Mobil 1 at about a thousand.

Either way, keep in mind that no matter what you do much of the oil is not filtered nor is removed when changing the oil. Not all oil is filtered due to the bypass valve that allows oil to bypass the filter preventing filter damage at high RPM. Not all oil is removed because no matter how carefully you drain several quarts remain in oil lines and radiators. These are the reasons its so important to do not just one but two early oil changes.

Once you're past a thousand or so though, forget about it. By then all those tiny little bits of shrapnel will have long since been ground down, or imbedded in the babbitt. http://en.wikipedia.org/wiki/Babbitt_(metal) Which, considering this is what happens with the vast majority of new Porsches, is hardly the end of the world. But maybe something to keep in mind for next time.

LexVan

Hi Shaytun, like Brad, I also do UOA's (used oil analysis). Can I suggest you read my posts about the UOAs on my car since new. This is a good start.

And I'd remind you, owners like Brad and I have "skin in the game". Others here will give you advice that have not only NEVER broke in a new 991 motor, but also haven't broken in any new 911 in the past 20 plus years. Filter out the noise. Listen to the real owners and the ones with the vested interest.

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Scottish Pete

You need to balance the recommendation of the builders of your modern engine with the advice of the many long time Porsche drivers on this list who follow their favorite uncle's advice on breaking in the engine of the family's new Studebaker back after WWII.
Modern precision machining, harder metal alloys and impressive advances in motor oils over the years have eliminated the need for special break-in oils. Oil filters can trap and hold the big pieces as the earlier poster's photos clearly show.
However . . . oil is cheaper than iron so an early oil change may give you a feeling of security for your expensive purchase. Can't hurt - although microsized abrasive particles removed in the drained oil may actually hinder the initial planned bedding-in process of some parts.
Another thread that will never die
Graduate of the Unocal Brea Research Center Advanced Products Course - Union Oil Company of California (1972-84)

drcollie

I am always amused when forum members think they have it figured out better than the Porsche AG Engineers.

tejstar01

And I am always amazed at anyone that believes everything they are told...lol...bet you think your doctor is 100% correct!

Just J

I'm always amused when people think that there's only one right answer, rather than understanding that *any* engineering solution involves making trade offs, and that each owner's constraints, goals, and priorities may be different from the model used by the engineers, leading them to a different answer that is just as "correct" for them as the engineers' answer was for the engineers.

CSK 911 C4S

Oil is better and filters are better than ever.

Break in: Drive it like you are going to drive.

I drive them like I stole them and never had an issue.

STG

What does Porsche recommend for a detailing/wash schedule for a 911?

Is there a one size fits all recommendation for this?