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Old Oct 8, 2018 | 08:34 PM
  #32  
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Rezus
Racer
 
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Is there a shelf life for unopened brake fluid? I have a few bottles that might be 10 years old, I guess time to toss those, right?
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Old Oct 9, 2018 | 09:46 PM
  #34  
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Rezus
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Originally Posted by Motul
Yes, our brake fluid has a shelf life of 24 months. -Nick
Thanks Nick. I don't see any dates on the bottles, any way to know how long they might have been sitting on the shelf at the store before buying?
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Old Oct 16, 2018 | 11:41 AM
  #36  
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Dolphf16
3rd Gear
 
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I have a 2016 991 C2S with a manual transmission. What change interval and fluid do you recommend and how does that compare to the factory fill? Thanks!
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Old Oct 16, 2018 | 12:04 PM
  #37  
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the_buch
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Have been using Motul for years on my 911s with great success. Just got a 991.2 tt with 11,000km on it which had a fresh oil change with M1 0W40. I'm going through oil at the rate of about 1l/4,000km and thinking about whether to go with your 5W40 or 0W40 (the latter is spec'd)? The car is not driven in anything below 3C (37F) as that's when the salt shows up Thanks, Doug
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Old Oct 16, 2018 | 03:05 PM
  #39  
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HDA
Three Wheelin'
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Originally Posted by Motul
The 8100 X-cess 5W40 and X-max 0W40 are both Porsche A40 approved and can go the manufacturer recommended interval. Most people around here seem to do oil changes in the 5,000-7,000 mile interval with good results. That being said, the used oil samples I've seen show you can go much longer as the oil has a lot of life left in it. It is up to you at the end of the day.

Both of the fluids I mentioned have shown they have better additive retention than the Mobil 1 0W40, higher content of anti wear additives for better protection and have shown to lower the wear metals in used oil analysis samples when compared to the Mobil 1 0W40 as well. Hope that helps. -Nick




Great to hear that, thank you! Both the 0W40 and 5W40 both hold the Porsche A40 approval so one does not supersede the other. The 0W product will have better pumpability at startup regardless of temperature but will be a tad more shear prone (viscosity loss) vs a 5W40 over the drain interval. -Nick
interested to read more about the test with Mobil 1! Is this published anywhere?
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Old Oct 16, 2018 | 05:26 PM
  #40  
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Papa Fittig
Burning Brakes
 
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What is the difference between 8100 x-cess vs 8100 x-clean?
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Old Oct 16, 2018 | 07:12 PM
  #43  
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Papa Fittig
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Thanks Nick. I assume that these 2 are compatible and can be mixed together i.e. filling the motor with one, while using another to add as necessary, correct?
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Old Jul 17, 2019 | 05:39 PM
  #45  
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Kelsey
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Default C40

Any new information on C40 approvals? Thanks
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