OIL ANALYSIS
#32
Rennlist Member
You are much braver than I am. My car has lived since new in AZ and now TX, and likely experiences as warm, or warmer temperatures than you have in Sacramento.
I change oil/filter every 5,000 miles or 1.5 years with either Mobil1 0W-40 or 5W-40. I would be more concerned with the 30 in "10W- 30" being too low viscosity at high temperatures, rather than the 10 being a slightly higher viscosity at start-up. YMMV though.
I change oil/filter every 5,000 miles or 1.5 years with either Mobil1 0W-40 or 5W-40. I would be more concerned with the 30 in "10W- 30" being too low viscosity at high temperatures, rather than the 10 being a slightly higher viscosity at start-up. YMMV though.
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#33
Rennlist Member
Thread Starter
You are much braver than I am. My car has lived since new in AZ and now TX, and likely experiences as warm, or warmer temperatures than you have in Sacramento.
I change oil/filter every 5,000 miles or 1.5 years with either Mobil1 0W-40 or 5W-40. I would be more concerned with the 30 in "10W- 30" being too low viscosity at high temperatures, rather than the 10 being a slightly higher viscosity at start-up. YMMV though.
I change oil/filter every 5,000 miles or 1.5 years with either Mobil1 0W-40 or 5W-40. I would be more concerned with the 30 in "10W- 30" being too low viscosity at high temperatures, rather than the 10 being a slightly higher viscosity at start-up. YMMV though.
#34
Is anyone running LiquiMoly in their GT3 or RS? My last few samples tested by Blackstone showed almost non-existent levels of Molybdenum and viscosity slightly below the normal ranges. My oil change intervals are less than 2000 miles. All wear metals were fine, but it has me wondering why an oil with Moly in the name would have almost zero Moly in its additive package.
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#35
Is anyone running LiquiMoly in their GT3 or RS? My last few samples tested by Blackstone showed almost non-existent levels of Molybdenum and viscosity slightly below the normal ranges. My oil change intervals are less than 2000 miles. All wear metals were fine, but it has me wondering why an oil with Moly in the name would have almost zero Moly in its additive package.
#36
I always buy from FCP Euro so assuming it's authentic.
UPDATE: I emailed Liquimoly and received a response stating that some formulations of their oil may not contain any Molybdenum. Their additive packages are a trade secret and they could not disclose what they do contain. Thinking about just going back to M1 European Formula. I don't see any quantifiable benefit of using LM to justify the increased cost over M1.
Last edited by GlenGT3; 03-15-2022 at 01:25 PM. Reason: update
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#37
Rennlist Member
Motul
#38
Rennlist Member
I just bought Mobil 5W-50 like I do every year from Napa, on sale for $5.99
It's the only Porsche approved 5W-50 though I believe Castrol does make a 5W-50 and Motul in select regions-
The viscosity is perfect for the climatic conditions here. I will again caution against using 10W-30 viscosity. It is not a viscosity range approved or used in any Porsche engine as far as I know, maybe in the earlier air cooled motors decades ago, if so-
JB
It's the only Porsche approved 5W-50 though I believe Castrol does make a 5W-50 and Motul in select regions-
The viscosity is perfect for the climatic conditions here. I will again caution against using 10W-30 viscosity. It is not a viscosity range approved or used in any Porsche engine as far as I know, maybe in the earlier air cooled motors decades ago, if so-
JB
#40
Could you elaborate on that? Why do you think LM is better than M1? I'm looking for any empirical evidence to justify staying with it as I prefer not to switch oils and have been using LM for quite some time now.
#41
Rennlist Member
Mobil 5W-50 Phosphorous 1000, Zink 1100
Mobil 0W-50 Phosphorous 1750, Zinc 1850
https://www.mobil.com/lubricants/-/m...ide-rev-31.pdf
I suppose if one doesn't care about catalytic converters, Mobil Racing 0W-50 is a good choice, but it's pretty expensive. $12.99 is the cheapest price I've seen, some places$17.99
Maybe mix one or 2 quarts of 0W-50 to the 5W-50 to get zddp levels up a bit if you think it matters
What are the comparable levels Motul offers?
Again, 10W-30 is not an approved viscosity-
JB
Mobil 0W-50 Phosphorous 1750, Zinc 1850
https://www.mobil.com/lubricants/-/m...ide-rev-31.pdf
I suppose if one doesn't care about catalytic converters, Mobil Racing 0W-50 is a good choice, but it's pretty expensive. $12.99 is the cheapest price I've seen, some places$17.99
Maybe mix one or 2 quarts of 0W-50 to the 5W-50 to get zddp levels up a bit if you think it matters
What are the comparable levels Motul offers?
Again, 10W-30 is not an approved viscosity-
JB
#42
Drifting
Primarily because of the removal of zinc from M1. I think you can also go down a never-ending rabbit hole trying to find an oil. If you've been using LM for a long time, I'd just stick with it. They make a quality oil.
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#43
Rennlist Member
Here is a quick copy and paste:
A:
The anti-wear additive simply referred to as zinc by most car enthusiasts is actually short for Zinc Dialkyl Dithiophosphates or ZDDP. Its primary role is to prevent metal-to-metal contact between engine parts by forming a protective film.
B:
during engine start-up where critical lubrication is insufficient between metal-to-metal lubrication points when using modern oils with reduced amounts of ZDDP/ZDTP.
My go to oil is Driven DT-50
A:
The anti-wear additive simply referred to as zinc by most car enthusiasts is actually short for Zinc Dialkyl Dithiophosphates or ZDDP. Its primary role is to prevent metal-to-metal contact between engine parts by forming a protective film.
B:
during engine start-up where critical lubrication is insufficient between metal-to-metal lubrication points when using modern oils with reduced amounts of ZDDP/ZDTP.
My go to oil is Driven DT-50
#44
Rennlist Member
Interesting. Going to Rabbit hole that.
#45
Drifting
Here is a quick copy and paste:
A:
The anti-wear additive simply referred to as zinc by most car enthusiasts is actually short for Zinc Dialkyl Dithiophosphates or ZDDP. Its primary role is to prevent metal-to-metal contact between engine parts by forming a protective film.
B:
during engine start-up where critical lubrication is insufficient between metal-to-metal lubrication points when using modern oils with reduced amounts of ZDDP/ZDTP.
My go to oil is Driven DT-50
A:
The anti-wear additive simply referred to as zinc by most car enthusiasts is actually short for Zinc Dialkyl Dithiophosphates or ZDDP. Its primary role is to prevent metal-to-metal contact between engine parts by forming a protective film.
B:
during engine start-up where critical lubrication is insufficient between metal-to-metal lubrication points when using modern oils with reduced amounts of ZDDP/ZDTP.
My go to oil is Driven DT-50
Citing some data on virgin DT50 vs Motul 4100 (referenced simply as "Motul" below) posted by @Motul in this thread. I'm adding in the data points for 300V 5W40, which is what I run in all my cars.
https://rennlist.com/forums/993-foru...l#post15111807
300V VOA: https://bobistheoilguy.com/forums/th...v-5w40.261968/
300V mfg datasheet: https://azupim01.motul.com/media/mot...n_fr_motul.pdf
Here is 300V vs M1, but I do not know which M1 oil is being used:
TBN/total base number
Purpose: generally speaking, it's an oil's ability to fight contaminants and neutralize acids
Motul: 10.5
DT50: 9.1
300V: NA
Viscosity Index
Purpose: an oil's ability to stay within grade as oil temperatures change
Motul: 147
DT50: NA
300V (mfg ref): 174
Zinc
Purpose: Anti Wear
Motul- 1155 ppm
DT50: 1102 ppm
300V: 1155 ppm
Phosphorous
Purpose: Anti Wear
Motul: 1020 ppm
DT50: 980 ppm
300V: 1020 ppm
Moly:
Purpose: Friction modifier- lower coefficient of friction= more power, increased internal component efficiency
Motul: 93 ppm
DT50: 0 ppm
300V: 579 ppm
Calcium:
Purpose: Detergent- controlling of deposits + more
Motul: 3309 ppm
DT50: 2620 ppm
300V: 2026 ppm
Boron:
Purpose: Anti wear, corrosion inhibitor, anti-oxidant
Motul: 47 ppm
DT50: 0 ppm
300V: 8 ppm
Viscosity @ 100 C/212F:
Purpose: Oil viscosity at operating temperature
Motul: 19.7 cSt- a 50 grade viscosity
DT50: 15.7 cSt- a 40 grade viscosity
300V: 13.46
Purpose: generally speaking, it's an oil's ability to fight contaminants and neutralize acids
Motul: 10.5
DT50: 9.1
300V: NA
Viscosity Index
Purpose: an oil's ability to stay within grade as oil temperatures change
Motul: 147
DT50: NA
300V (mfg ref): 174
Zinc
Purpose: Anti Wear
Motul- 1155 ppm
DT50: 1102 ppm
300V: 1155 ppm
Phosphorous
Purpose: Anti Wear
Motul: 1020 ppm
DT50: 980 ppm
300V: 1020 ppm
Moly:
Purpose: Friction modifier- lower coefficient of friction= more power, increased internal component efficiency
Motul: 93 ppm
DT50: 0 ppm
300V: 579 ppm
Calcium:
Purpose: Detergent- controlling of deposits + more
Motul: 3309 ppm
DT50: 2620 ppm
300V: 2026 ppm
Boron:
Purpose: Anti wear, corrosion inhibitor, anti-oxidant
Motul: 47 ppm
DT50: 0 ppm
300V: 8 ppm
Viscosity @ 100 C/212F:
Purpose: Oil viscosity at operating temperature
Motul: 19.7 cSt- a 50 grade viscosity
DT50: 15.7 cSt- a 40 grade viscosity
300V: 13.46