M1 Properties Table

2KBMW · May 24, 2004

Buster. All I have to do to raise
the HT/HS viscosity in Mobil 1 is
mix 5w30 or 10w30 with 15w50. I
used a mixture of 4L/10w30 with
2L/15w50 in my BMW a few weeks ago.
This raised the HT/HS vis. to 3.81
which makes it a A3 rated oil.
This is way cheaper than buying
Amsoil. The Mobil 1 cost me $20 cdn.
(4 L jug) a few months ago and I
stocked up on it.

The cSt @ 100 C went from 10 to 12.46.
The cSt @ 40 C went from 62 to 83.

n8wvi · May 24, 2004

Could we add HTHS to the chart? I've got it for a few of them

15-50 5.11
0-40 3.6
5-30 3.08
10-30 3.17

Dave

ekpolk · May 24, 2004

Cweed: Great job on the table, thanks!!!

2KBMW: I'm seriously considering trying an M1 brew of the same variety myself (my engine holds five qts, I'm considering a 4:1 mix). How did you arrive at the new HTHS number, calculation, lab work, other?

doyall · May 24, 2004

Don't forget M1 V-Twin 20W-50. Here is the latest VOA:

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=11;t=000196

2KBMW · May 24, 2004

Ekpolk. I just use simple math. The
HT/HS vis for 10w30 Mobil 1 is 3.17.
The HT/HS vis. for the 15w50 is 5.11.
For your mix of 4:1, 4 x 3.17 =12.68.
12.68 + 5.11 = 17.79. Therefore
17.79 divided by 5 equals 3.55. This
will give you an A3 rated oil.

cweed · May 24, 2004

The table is growing

Included V-Twin VOA doyall pointed out.

ekpolk: glad you like it, i think its a good start point for a lot of people trying to make a decision on which viscosity of M1 to choose for their application.

quadrun1 · May 25, 2004

Could we add a couple of figures?

TBN of 0W-40 is 12 (VOA here)

TBN of 5W-30 is 11.8 (according to this site, mile 0* in the chart)

Thanks!

quadrun1 · May 25, 2004

Oh, and typo in the word "manganese"

Thanks again!

cweed · May 25, 2004

you got it!

Shannow · May 25, 2004

Coolness.

Thanks for your efforts

metroplex · May 25, 2004

Right now I am mixing 4 qt M1 5W-30 with 1 qt M1 15W-50.

I think I will go with M1 10W-30 + 15W-50 next because of their shear resistance!

cweed · May 25, 2004

Shannow:

At my last two intervals i used a mix of M1 10W-30 and 15W-50, 4:2 winter, 3:3 summer. Not bad mix considering the oils are very similar in their chemistry, but I opted to run straight T&SUV instead once I got a hold of it, get about the same oil pressures as my summer mix. Btw, the T&SUV oil is very sticky, clings onto the dipstick like glue and sooo clean looking, makes me want to spread it on a piece of bread and eat it....

Thinking of giving Redline another try though, trying to find an oil that will quiet down my LT1 and provide the best protection possible.... I havent done a UOA on my winter brew yet, but i saved some to send once my kit arrives.

Alex D · Jul 18, 2004

The sUS and CST viscosities for M1 15W-50 and M1 V-Twin do not correlate. The small difference of the cST viscosity from 17.4 (15W-50) to 17.7 (M1 V-Twin) stands in contrast to the rather large spread of the sUS viscosity @210 of 89.1 (15W-50) to 101.8 (M1 V-Twin).

Something's not right here in this chart with these particular two viscosities??!!

cweed · Jul 18, 2004

the data is taken from 2 diff sources, the cst@100 and cst@40, as well as HT/HS and VI is taken from mobil's site while the rest of the data is taken from posted VOAs, data i found via the search function of this site, and data others have sent me.

[ July 19, 2004, 09:46 AM: Message edited by: cweed ]

Alex D · Jul 18, 2004

I understand, we need some help to correct this data though since there seems to be an obvious error in some of the numbers.

quote:

Originally posted by cweed:
the data is taken from 2 diff sources, the cst@100 and cst@40, as well as HT/HS and VI is taken from mobil's site while the rest of the data is taken from posted VOAs, data i found via the search function of this site, and data others have sent me.

cweed · Jul 18, 2004

If you give me the correct data I can update the table, if not I'll remove the SUS @ 210 from the table, i dont want people to be mislead by the table and i didnt personally check the "quality" of the data when i posted it.

Alex D · Jul 19, 2004

cweed, use this converter to get it right:

http://neptune.spacebears.com/cars/stories/margins.html

Go from the known value, cST or sUS and convert to the unknown. There are more inconsistencies in the table, i.e. 17.4 cST on the 15W-50 does not convert to a sUS of 89.1 as listed in your table, but rather to 87.6 and the M1 V-Twin with a cST of 17.7 (from M1 web site data sheet) would convert to a sUS of 88.8 and not 101.8 as shown in your table.

This seems to again show us how inconsistent oil analysis is. I believe the margin of error is so great that you can only take realle large deviations from normal values as an indicator for potential problems. I don't think that when we argue about a few ppm here or there that it has any relevance to reality.

quote:

Originally posted by cweed:
If you give me the correct data I can update the table, if not I'll remove the SUS @ 210 from the table, i dont want people to be mislead by the table and i didnt personally check the "quality" of the data when i posted it.

Hankrr · Jul 20, 2004

Hey thanks for bumping this. I was looking for it again but couldn't find it. Meant to copy this for future ref.

cweed · Jul 20, 2004

I will do the conversion and post an updated version tonight. Also working on a couple of other tables that I will be posting in the future

Bugzii · Jul 22, 2004

cool table... thanks!!!

M1 Properties Table

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