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    Valvoline Synpower 5W-40 A40 Porsche 911 997 4400 miles

    Hi folks, New UOA on my watercooled 911 997 3.8 Porsche year 2005 Valvoline Synpower 5W-40: 4400 miles and 5 months of winter storage without starting the engine at all Oil filter: Royal Purple 10-2835 and LN engineering spin-on oil filter adapter and Low.temp. thermostat. No track use this...
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    Shell Spirax or Mobil PTX (not sure) 75W-90 Porsche 997 43500 miles on the oil

    Porsche recommend Shell Spirax S5 or Mobilube PTX 75W-90, i have now filled up my transmission with Motul Gear 300 75W-90 , smooth as silk, and i will have a maximum OCI at 20000 miles, or maybe once a year since i track the car pretty often
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    Shell Spirax or Mobil PTX (not sure) 75W-90 Porsche 997 43500 miles on the oil

    Any toughts ? My lab contact said the oil was shot, low viscosity
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    Valvoline Synpower 5W-40 A40 Porsche 911 997 5900 miles

    Hi folks, New UOA on my watercooled 911 997 3.8 Porsche year 2005 Valvoline Synpower 5W-40: 5900 miles and 5 months of winter storage without starting the engine at all Oil filter: Royal Purple 10-2835 and LN engineering spin-on oil filter adapter Low.temp. thermostat Heavy track use. Total...
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    Mobil 1 0W/40 Porsche 911 2006 Miles 64,651

    I never use Mobil 1 0W-40 in my Carerra S, only 5W-40, you can read my latest UOA https://bobistheoilguy.com/forums/threads/porsche-911-997-uoa.316720/ My 911 have passed 96000 miles, NO scoring, no nothing, i also use the spin-on oil filter adapter, and only Royal Purple filters. My toughts on...
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    Porsche 911 997 UOA

    Hi folks, New UOA on my watercooled 911 997 3.8 Porsche year 2005 Valvoline Synpower 5W-40: 5700 miles and 5 months of winter storage without starting the engine at all Oil filter: Royal Purple 10-2835 and LN engineering spin-on oil filter adapter Low.temp. thermostat Heavy track use and...
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    First UOA - 2006 Porsche 911 Carrera S 3.8 Mobil 1 0W-40

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by kschachn</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by Porscheman</div><div class="ubbcode-body">Results are good <span style="font-weight: bold">Very smart...
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    First UOA - 2006 Porsche 911 Carrera S 3.8 Mobil 1 0W-40

    Results are good Very smart move to switch to a 5W-40 oil, i never use Mobil 1 0W-40 in my Carerra S, only 5W-40, you can read my latest UOA <a...
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    Porsche 911 UOA Valvoline Synpower 5W-40

    Hi folks, New UOA on my watercooled 911 997 Porsche year 2005 Valvoline Synpower 5W-40: 6600 miles and 5 months of winter storage without starting the engine at all Oil filter: Royal Purple 10-2835 and LN engineering spin-on filter adapter Heavy track use Total miles on the engine: 89000...
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    Porsche 911 UOA

    Hi folks, New UOA on my watercooled 911 997 Porsche year 2005 Valvoline Synpower 5W-40 6000 Miles Total miles on the engine: 82000 miles Little high on Nitration, should i be concerned? And what about the Viscosity? All other values seems to be fine. <a class="lb-image-link"...
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    Porsche 911 UOA

    Well, i see Your concern, anyway this was just a "high" risk test on a standard shelf syntetic, i will never use that oil again, my future tests will be With the Valvoline Synpower 5W-40, and that will be the only oil used in the future, Royal Purple be to expensive, Mobil 1 rise my oil...
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    Porsche 911 UOA

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kschachn</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Porscheman</div><div class="ubbcode-body">And yes they use their own label and bottles, provider puts...
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    Porsche 911 UOA

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Porscheman</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Quattro Pete</div><div class="ubbcode-body"><div class="ubbcode-block"><div...
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    Porsche 911 UOA

    And yes Biltema make their own label and bottles, the provider fills them With oil <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" />
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    Porsche 911 UOA

    Oil capacity factory: 9 qt Oil capacity With "sump spacer" : 9,5 qt It is wet sump, but i have made the sump a little deeper With a "deep-sump" spacer, that rise the oil quantity by 0,52 quarts, to make more circulation and cooling. The older Porsche 911 cars had what is known as a dry-sump...
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    Porsche 911 UOA

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Quattro Pete</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Porscheman</div><div class="ubbcode-body"> Biltema is from a quite large company operating over...
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    Porsche 911 UOA

    Just startet to make a trend on my car, 3 Different Oils, Biltema is from a quite large company operating over here in Scandinavia, and they specialise in "cheap" car DIY items, it have all the approvals API SN, ACEA A3/B4, Porsche A40, they buy the oil from a large provider in the UK, the...
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    Nitration level

    Watercooled Porsche 911 3.8 litre, i did find a tread here at the forum about nitration levels: Excellent would be under 10%, good would be 10-20, satisfactory would be 20-50 and 50 or higher would be poor. Based on a 5-6k interval. It can be many causes to nitration: Exhaust Gas Scavenging...
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    Nitration level

    Last oil analysis showed a nitration Level at 25 A/cm.. the oil have 6000 miles on it, just a standard 5W-40 syntetic oil. My question is, should i be concerned? The lab told me: "Some nitration... Just change the oil"
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    QMI engine treatment

    I have used M1 0W-40 before, but i had high oil consumption......switching over to VSP 5W-40 and oil consumption allmoust drop to 0 i also try the RP HPS 10W-40 and oil consumption also dropped, But since RP HPS have no approvals i stick to VSP 5W-40 that have the A3/B4 and Porsche A40...
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