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Hi folks, New UOA on my watercooled 911 997 3.8 Porsche year 2005 Valvoline Synpower 5W-40: 4700 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. Heavy track day use...

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...

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

Any toughts ? My lab contact said the oil was shot, low viscosity

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...

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...

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...

Originally Posted by kschachn Originally Posted by Porscheman 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, search "Porscheman" My 911 have passed 96000 miles, NO scoring, no nothing, i also use...

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 https://www.bobistheoilguy.com/foru...uoa-valvoline-synpower-5w-40#Post4807015 My 911 have passed 96000 miles, NO scoring, no nothing, i also use the...

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...

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.

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...

Originally Posted By: kschachn Originally Posted By: Porscheman And yes they use their own label and bottles, provider puts the oil in The problem is that if it is relabeled, regardless of what anyone thinks it is or what it may or may not be, the certifications do not transfer. From what I...

Originally Posted By: Porscheman Originally Posted By: Quattro Pete Originally Posted By: Porscheman 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...

And yes Biltema make their own label and bottles, the provider fills them With oil

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...

Originally Posted By: Quattro Pete Originally Posted By: Porscheman 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...

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 blue...

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...

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"