BMW M3 (F80) Oil Selection & SAPS concern - S55

[svenson]

You told people to compare it not to calculate it. So, explain what you meant as no one will post which methodology is which.
Also, Zinc is primary cause of catalytic converter failure.

i also dont understand what you meant.
its simple.

S

Thread 'Flashpoint Testing Method ASTM D-92 vs. ASTM D-93'

Nov 3, 2006

Does anyone know what the difference is in the test methods between the two?

I recently checked the Dino Pennzoil 5w30 flashpoint as 216 deg. F (ASTM D-93) and Pennzoil Platinum 5w30 flashpoint as 196 deg. F (ASTM D-92).

At first I thought, why would the Dino Pennzoil have a that much of a higher flashpoint than their "best" Platinum line. Then I realized the test methods were different. So it led me to the question of what's the difference in the two methods?

• silverbullet
• Replies: 3
• Forum: Passenger Car Motor Oil (PCMO) - Gasoline Vehicles

they did answered my question.

 

[Jetronic]

oh ,i see you refer to the gas and diesel,ok..i know about this .
i thought you meant between a gas that consumes oil and a gas that doesn't.

on a gas engine It's the phosphorous that can poison the catalytic converter. the phos^horous content can be around 20% higher, typically.

 

[BMWTurboDzl]

you mean open cap vs closed cap flash point.whats the diffrence in points between 2? or you cant do this ? i mean,
if you have 2 oils with different methods then can you somehow calculate/compare the point between these 2 or not?

Open cup will return a lower value compared to closed. It's hard to quantifying how much because of variability in how a test set up.

 

[edyvw]

i also dont understand what you meant.
its simple.

S

Thread 'Flashpoint Testing Method ASTM D-92 vs. ASTM D-93'

Nov 3, 2006

Does anyone know what the difference is in the test methods between the two?

I recently checked the Dino Pennzoil 5w30 flashpoint as 216 deg. F (ASTM D-93) and Pennzoil Platinum 5w30 flashpoint as 196 deg. F (ASTM D-92).

At first I thought, why would the Dino Pennzoil have a that much of a higher flashpoint than their "best" Platinum line. Then I realized the test methods were different. So it led me to the question of what's the difference in the two methods?

• silverbullet
• Replies: 3
• Forum: Passenger Car Motor Oil (PCMO) - Gasoline Vehicles

they did answered my question.

I know it is simple. But, if one is telling people to compare it, at least point to differences.

 

[svenson]

i didnt say anything about comparing,jetronic said:
''Pick a grade of interest, check the reported flaspoints for several oils, then compare to HPL or Red Line for example.''

so
castrol 5-30 LL is
Flash Point, PMCC ASTM D93 °C 196

he said to compare it with a hpl oil.

lets say euro 5-30 but that one has methodlogy
ASTM D92 and flashpoint 216

most of oils as i had a look,i didnt before,have the ASTM D92 or DIN ISO 2592

so how will i know if this castrol has high flashpoint if i cant compare it (as you say) with hpl ,ASRM D93 method as he says?

this should be a conversation between you two ,not me.

 

[svenson]

on a gas engine It's the phosphorous that can poison the catalytic converter. the phos^horous content can be around 20% higher, typically.

i am not a mechanic..so if you have an engine with exhaust after treatment system that consumes oil ,using a high saps oil os worst than a low/mid saps oil due to higher phosphorous content? is this what you mean?

 

[edyvw]

i am not a mechanic..so if you have an engine with exhaust after treatment system that consumes oil ,using a high saps oil os worst than a low/mid saps oil due to higher phosphorous content? is this what you mean?

Low/mid SAPS oils can also have high Zinc value. Zinc is detrimental to catalytic converters and whole reason why it is limited in street oils.

 

[svenson]

i know these.my question has nothing to do with catalytic converters but the post of jetronic regarding consumption first and the high flashpoint comparison with hpl second.

 

[Nathan]

Long time lurker and first time poster. Who knew learning about oil and how it impacts motors could be so interesting.

The purpose of this post is to seek some validation around the correlation between SAPS and direct injection and finding the right balance with performance and protection in mind.

The M3 is new to me (purchased earlier this year); 2017 built with 46K kms on the clock (I purchased it with 41K on the clock).

I did an oil change soon after at 43K using Motul 8100 X-cess 5w40 gen2 based on a detailed oil thread on the F80 Bimmerpost forum. The last oil change was at 38K prior to my ownership and based on a conversation with the previous owners mechanic they used 0w-40 Mobil (not sure what spec)

Reasons for my choice

- Oil fits the LL-01 approval and my understanding is that BMW recommended either 0w-30/0w-40 in the initial release of the car.
- M3 is stage 2+ modified (catless downpipes, uprated plugs, air filters and tune) and has also been tuned for E30 blend fuel
- Figured running an oil with HTHS of 3.8 would offer some better protection due to the increased load on a tuned engine;
- My plans were to run the ethanol map once a month as most of my driving is in the city with mixed traffic and lots of start/dtop (therefore fuel dilution) however due to practicality I haven't been running this tune and sticking to 98 RON fuel map.
- Positive feedback from users

My plan is to perform an oil analysis on the next oil change at 48K (5k km interval).

To cut to the chase, the sulfated ash of this oil is 1.1% which is considered on the higher side.

Should I be concerned about running this oil long-term and it impacting the carbon build up or due to any other reasons?

Are there any alternative oils with lower SAPS that meet the use-case? I was looking at Shell Helix Ultra 5w-40 as a second choice since it is a thinner 40 weight at the time but opted for Motul instead.

For context I'm based in Australia

Here's some of the UOAs I've collected for the S55.
To me, it looks like Redline is best, then Motul, then PPE (Shell Helix).

Paul Johnson suggests Motul 5w40 Sport or 300V, also Redline 5w40 when using ethanol mix.

My samples of PPE 5w40 are running E60 90% of the time so if you have a good engine that doesn't consume oil (like me), and get the car up to temp, it won't raise fuel contamination at all. However, I am seeing about 10ppm wear metals/1k mi so I'm going to try Redline next round as I'm shooting for 5ppm wear/1k mi as "The Motor Oil Geek" suggests.