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Old Jul 15, 2025 | 09:37 AM
  #16  
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Originally Posted by Fullyield
Wouldn’t tighter machine tolerances be an argument for changing your oil more frequently during the break in period?
No. Just the opposite. Because the components are so perfectly made to high specifications, consistencies and tolerances that there is much less wear early in life. Everything fits together better. Less wear.
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Old Jul 15, 2025 | 10:13 AM
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Old Jul 15, 2025 | 10:15 AM
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Old Jul 15, 2025 | 10:17 AM
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Don't you love oil discussions?

The reason for extended oil changes does not have so much to do with modern engines or even modern oils. It's more to due with environmental impacts, but most oil is recycled, so the impact has more to do with energy.

For your vehicle I would change the oil at about 1K miles for your first change and then every 5K to 6K miles or no more than one year.

The environment you drive in and how you drive really determines when your oil should be changed, but changing oil early has minimal negative impact on your engine and is much cheaper than an early engine rebuild.

Use only the recommended oil and don't use additives. There is nothing you can add to engine oil that will improve the longevity of your engine. If there was the oil companies would be putting it in there. The commercial fleets are very sensitive to maintaing their engines to keep costs down, so oil companies are keen to provide the best lubricants they can right out of the bottle.

Municipalities typically use engine oil analysis to determine when to change oils, as this minimizes the cost of fleet ownership by more accurately determining when engine oils have degraded to a point where they need to be changed. That's overkill for us (unless you have a high mileage engine and want to keep tabs on its state of health). Just change your oil and filter regularly, keep your receipts, and enjoy every mile and smile.
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Old Jul 15, 2025 | 10:24 AM
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Originally Posted by Fullyield
Another clue that engines are not broken in at the factory is the time, resources, and money it takes to run an engine for any extended period of time required to bed in the parts.
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Old Jul 15, 2025 | 10:49 AM
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I encourage the OP to research this question, particularly the opinions of recognized Porsche flat 6 engine experts such as Jake Raby, Charles Navarrro and Tony Callas, regarding appropriate oil change intervals. They agree with Marv, BTW. But it is your car so educate yourself and then do as you think best for your specific circumstances.

Last edited by Fullyield; Jul 15, 2025 at 10:51 AM.
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Old Jul 15, 2025 | 11:11 AM
  #22  
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Originally Posted by rdboxster
I believe the spec is 10k miles or 1 year. I have it changed once a year since I only put on 3k to 5k miles a year and I store for the winter.
the U.K. / Europe is 2 years 20,000 miles ( with the car changing that interval depending on how it is driven )
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Old Jul 15, 2025 | 12:36 PM
  #23  
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Originally Posted by jeremylondon
the U.K. / Europe is 2 years 20,000 miles ( with the car changing that interval depending on how it is driven )
And Europe tends to drive these cars harder than we do. My guess is the EU is pushing hard on environmental impacts, but my take is that there are relatively few Porsches on the road compared to the rest of the driving public, so the savings doesn't really make much of a difference in the wider scheme of things.
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Old Jul 15, 2025 | 04:41 PM
  #24  
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Originally Posted by Marv
Don't you love oil discussions?

The reason for extended oil changes does not have so much to do with modern engines or even modern oils. It's more to due with environmental impacts, but most oil is recycled, so the impact has more to do with energy.

For your vehicle I would change the oil at about 1K miles for your first change and then every 5K to 6K miles or no more than one year.

The environment you drive in and how you drive really determines when your oil should be changed, but changing oil early has minimal negative impact on your engine and is much cheaper than an early engine rebuild.

Use only the recommended oil and don't use additives. There is nothing you can add to engine oil that will improve the longevity of your engine. If there was the oil companies would be putting it in there. The commercial fleets are very sensitive to maintaing their engines to keep costs down, so oil companies are keen to provide the best lubricants they can right out of the bottle.

Municipalities typically use engine oil analysis to determine when to change oils, as this minimizes the cost of fleet ownership by more accurately determining when engine oils have degraded to a point where they need to be changed. That's overkill for us (unless you have a high mileage engine and want to keep tabs on its state of health). Just change your oil and filter regularly, keep your receipts, and enjoy every mile and smile.
Originally Posted by Marv
And Europe tends to drive these cars harder than we do. My guess is the EU is pushing hard on environmental impacts, but my take is that there are relatively few Porsches on the road compared to the rest of the driving public, so the savings doesn't really make much of a difference in the wider scheme of things.
Or maybe your work for Mobil™?
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Old Jul 16, 2025 | 11:53 AM
  #25  
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Don't new cars have additives that assist in break-in? And doing an early oil change negates those benefits by flushing the additives out.
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Old Jul 16, 2025 | 01:50 PM
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Originally Posted by Ikone
Don't new cars have additives that assist in break-in? .
No.

Last edited by Fullyield; Jul 16, 2025 at 01:56 PM.
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Old Jul 16, 2025 | 03:56 PM
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I change oil on new cars after 1000 miles (did it on my S/T about 2 months ago) and from then on, every car gets one oil change a year. With 10 cars, that is enough (I do most of them myself) for me and I'm not looking to do more but I also don't put anywhere near 10,000 miles a year on any car - they all get about 1000-2000 miles annually (I drive them all roughly equal amounts).
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Old Jul 17, 2025 | 09:25 AM
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Originally Posted by RudyP
I change oil on new cars after 1000 miles (did it on my S/T about 2 months ago) and from then on, every car gets one oil change a year. With 10 cars, that is enough (I do most of them myself) for me and I'm not looking to do more but I also don't put anywhere near 10,000 miles a year on any car - they all get about 1000-2000 miles annually (I drive them all roughly equal amounts).
I Do about the same thing with my cars. Do 1-2K miles for break in, then do an oil filter change. (If manual tans I will also do Transmission fluid as well) - then I do 1 time per year on my cars. I am in the same boat with my cars - 2K - 5K miles on my cars per year, as I rotate fun cars. Having a lift helps as well, as enables me to do most maintenance in the winter (in Ohio cuts down drive time).
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Old Jul 17, 2025 | 09:36 AM
  #29  
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Originally Posted by Richard_Wallace
I Do about the same thing with my cars. Do 1-2K miles for break in, then do an oil filter change. (If manual tans I will also do Transmission fluid as well) - then I do 1 time per year on my cars. I am in the same boat with my cars - 2K - 5K miles on my cars per year, as I rotate fun cars. Having a lift helps as well, as enables me to do most maintenance in the winter (in Ohio cuts down drive time).
+1 on doing an early gear oil change too to remove metal debris. Smart.
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Old Jul 17, 2025 | 09:44 PM
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Originally Posted by ipse dixit
Or maybe your work for Mobil™?
Naw. Just myself. Oil's cheap. Engines not so much. I've done about 30+ changes on my car (so far).
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