another M! mix - maybe?

[dustyjoe1]

That mix calculator has opened up a real can of worms for me

Here is what I'm thinking for my honda civic 3 quarts m1 0w20 and 0.75 quart of m1 15w50. Calculator sais vi of 170, vis at 40 = 53.2 and vis @100 = 9.7. I love the way these numbers sound for my 5w20 specd. honda. What do you all think? Keep in mind the ht/hs for 15w50 is 5.11! that should beef up the oil a bit for those hot texas summers

 

[Patman]

Your final mix numbers look an awful lot like Mobil 1 5w30, why don't you just use it instead?

 

[dustyjoe1]

I was trying to get a 20 weight with better ht/hs properties. One other mix, maybe a better one, I have considered is another 80/20 mix but this time with 0w40 - that one would get me a 9.3 @100. You do have a point though, just getting the 5w30 might be easier... Thanks.

[ November 26, 2004, 03:54 PM: Message edited by: dustyjoe1 ]

 

[Blue99]

Here is a response from Mobil 1 on a mixing question, located in the FAQ archive at the M1 site:

12/09/2002 - Mixing Different Viscosities Together

Q. I have a '98 Jeep Cherokee with a 4.0-liter six-cylinder engine. I currently use Mobil 1 10W-30 in it and the oil pressure is generally good at all times including hot idle. But I have noticed that after pulling a trailer on the highway with the A/C on, the hot idle pressure is less than should be expected. My question is: The engine holds six quarts of oil and if I mix three quarts of 10W-30 and three quarts of 15W-50, will I get an oil that is a little heavier than the 10W-30? Would this make up something like a 12W-40?
-- Kevin, Pensacola FL

A. Mixing 50/50 of 10W-30 and 15W-50 will produce a viscosity in between the two. It is not possible to assign an SAE number but 15W-50 is about twice a thick as a 10W-30.


Typically, the responses from M1 in this archive are very cautious and frequently are prefaced with "Consult your owners manual".

What is apparent in this response is that they have no particular objections to mixing 2 different grades of M1 synthetic.

 

[GreenElixer]

Come on' Patman, your no fun

dustyjoe...go ahead, be creative...try that 0w20 and 0w40 for 5k and do a UOA and see whatcha get! My 03 Civic doesn't like the 30W's unless it's mixed in at 1 Qt at a time w/ 20W's. I think I'll try the M1R 0w30 w/ the M1 0w20 next OCI.

Have fun and satisfy those oil mixing urges!

 

[tenderloin]

Here are some specs on a few different oils. Might find something you like

Synergyn 0w-20
Viscosity
@ 40 Degrees C 48.2
@ 100 Degrees C 8.8
Viscosity Index 165
API Gravity 31.7
Specific Gravity 0.867
Flash Point, Degrees F 410 Degrees F
Pour Point, Degrees F -65 Degrees F

Synergyn LTS 3W-30
Viscosity
@40 Degrees C.67.8
@100 Degrees C.10.7
Viscosity Index 146
API Gravity 29.12
Specific Gravity 0.881
Density, Lbs/Gal. 7.35
Flash Point, Degrees F 410
Pour Point, Degrees F -40

Torco 0W-20
Viscosity
@40 Degrees C. 40.88
@100 Degrees C. 7.31

Torco 5W-30
Viscosity
@40 Degrees C. 62.18
@100 Degrees C. 11.16

Lucas 10W-30 Synthetic
specific gravity @ 60F .8591
@40 Degrees C. 57.0
@100 Degrees C 10.5
Viscosity index 185

Lucas makes a 5W-20 synthetic but no specs available yet

 

[MGBV8]

Motul advise against mixing the vis with others in range

http://www.motul.co.nz/product_line_up/4stroke/4stroke04.html

Any ideas why?

 

[Mickey_M]

quote:

---

Originally posted by MGBV8:
Motul advise against mixing the vis with others in range

http://www.motul.co.nz/product_line_up/4stroke/4stroke04.html

Any ideas why?

---

If they are using certain VIs, the results could be unpredictable. Without knowing more about their chemistry, it's hard to say.

 

[Motorbike]

It's kinda like Chevron sells 3 different Paratones " vii's " The PCMO uses a different one than the HDEO .

Why not pick up a case of Synergyn Synthetic 15w-50 with it's 1700ppm or so of zinc and boost about any oil with it

 

[KW]

quote:

---

Originally posted by Blue99:
Here is a response from Mobil 1 on a mixing question, located in the FAQ archive at the M1 site:

12/09/2002 - Mixing Different Viscosities Together

Q. I have a '98 Jeep Cherokee with a 4.0-liter six-cylinder engine. I currently use Mobil 1 10W-30 in it and the oil pressure is generally good at all times including hot idle. But I have noticed that after pulling a trailer on the highway with the A/C on, the hot idle pressure is less than should be expected. My question is: The engine holds six quarts of oil and if I mix three quarts of 10W-30 and three quarts of 15W-50, will I get an oil that is a little heavier than the 10W-30? Would this make up something like a 12W-40?
-- Kevin, Pensacola FL

A. Mixing 50/50 of 10W-30 and 15W-50 will produce a viscosity in between the two. It is not possible to assign an SAE number but 15W-50 is about twice a thick as a 10W-30.


Typically, the responses from M1 in this archive are very cautious and frequently are prefaced with "Consult your owners manual".

What is apparent in this response is that they have no particular objections to mixing 2 different grades of M1 synthetic.

---

Hey that was me. I ended up mixing 5W30 and 15W50 and it fixed the hot idle issue I had.