Recent Topics
the backwards steering bicycle
by Rick in PA
Today at 04:18 AM
DMCA You can no longer work on your car
by Stewie
Yesterday at 11:30 PM
Havoline high mileage
by Jschreffler81
Yesterday at 11:14 PM
Checking Spark Plug Wire and Ignition Coil ?
by HTSS_TR
Yesterday at 11:11 PM
Mobil 1 0w-40 5 qt jug - $23.88 at Walmart
by jdavis
Yesterday at 10:37 PM
2003 Ford Focus Air Filter Housing Rant
by ThirdeYe
Yesterday at 10:27 PM
Some flowers
by Mystic
Yesterday at 10:13 PM
new rack and pinion...installed
by Mark72
Yesterday at 10:05 PM
break cleaner on guns ?
by leroyd92
Yesterday at 10:04 PM
Harbor Freight no longer sells the #3 pipe cutter
by slacktide_bitog
Yesterday at 09:55 PM
The freebees today has been off the charts
by PhilsSmallEngine
Yesterday at 09:55 PM
"Parts Master #61334 (CUT OPEN) 9,800~ 13' Accent
by car51
Yesterday at 08:18 PM
Newest Members
micmac, JeepNW14, RagTop69, David_N, Slippery_Bearing
53761 Registered Users
Who's Online
32 registered (Char Baby, CapriRacer, Bookmaker, 5 invisible), 580 Guests and 202 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
53761 Members
66 Forums
230445 Topics
3689211 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2897415 - 02/06/13 01:22 PM Blending Viscosities Calculator
jstutz Offline


Registered: 10/06/08
Posts: 1522
Loc: NC
Guys, a few years ago i put this calculator together , in excel, to share with BITOG Members. Some of the information in it is outdated but the tool is still very handy. I have seen a lot of posts asking questions about viscosity, blending different oils, and cold weather performace of particular oils. Please keep in mind that the equations used have higher error ratios as you go further from the numbers that you input. Anyway take a look at it and if you have any questions or comments please PM me as i have been very busy and may loose site of the post. Ill try the best i can to answer any questions should there be any.

https://docs.google.com/file/d/0B6pXF6fW...dit?usp=sharing

Top
#2897418 - 02/06/13 01:24 PM Re: Blending Viscosities Calculator [Re: jstutz]
jstutz Offline


Registered: 10/06/08
Posts: 1522
Loc: NC
One side note. Google has there own viewer and the equations do not work with it. You have to actually download the .xls file then modify it as you wish.

Also i should list what the tool does.

It will:
Graph up to three different oils
calculate VI from known viscosities
Allow you to blend two different oils and see the resulting viscosity from the misture.

You will need basic information such as 40 and 100C viscosity in cSt.


Edited by jstutz (02/06/13 01:28 PM)

Top
#2897459 - 02/06/13 01:57 PM Re: Blending Viscosities Calculator [Re: jstutz]
Brule Offline


Registered: 11/12/12
Posts: 422
Loc: St. Louis, Mo
Nice to be able to use a calculator offline...Thanks!
_________________________
2014 Camry V6 SE (QSUD 5w20)
2003 Civic Si [sold]
2010 Frontier SE 4.0 [gone]
2006 BMW M Coupe [sold]

Top
#2897464 - 02/06/13 02:04 PM Re: Blending Viscosities Calculator [Re: jstutz]
LeakySeals Offline


Registered: 02/18/11
Posts: 5070
Loc: MA
I just opened with "Google sheets". trying it out, thanks.
_________________________
02 Camry XLE 2AZ-FE 305k M1 HM 5w30, 9k OCI.
13 Malibu 9k unknown..

Top
#2897474 - 02/06/13 02:08 PM Re: Blending Viscosities Calculator [Re: jstutz]
jstutz Offline


Registered: 10/06/08
Posts: 1522
Loc: NC
I have not got it to work in google sheets. The graphs dont come in when i use google sheets

Top
#2897533 - 02/06/13 03:01 PM Re: Blending Viscosities Calculator [Re: jstutz]
Donald Offline


Registered: 03/21/04
Posts: 14741
Loc: Upstate NY
But this just does it for virgin oil. What about oil with 100 hours or 1000 hours. There is plenty of good oil available at various weights, do not see the point in mixing.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#2897547 - 02/06/13 03:13 PM Re: Blending Viscosities Calculator [Re: Donald]
LeakySeals Offline


Registered: 02/18/11
Posts: 5070
Loc: MA
For old engines like mine. A couple of quarts 5w30 for starts, some 10w40 for highway oil burning. It likes blends, I can tell by the idle and the vvt-i ticking or lack of. His sheet tells me which way to blend by qt for summer and winter.
_________________________
02 Camry XLE 2AZ-FE 305k M1 HM 5w30, 9k OCI.
13 Malibu 9k unknown..

Top
#2897610 - 02/06/13 03:58 PM Re: Blending Viscosities Calculator [Re: jstutz]
HTSS_TR Offline


Registered: 04/17/06
Posts: 14375
Loc: Lake Forest, CA
Using the calculator to check 3 Mobil 1 grades: 0W20, 0W30 and 0W40.

As expected, M1 0W20 at 80C(13.4 cSt) is as thick as 0W30(13.6 cSt) at 90C and 0W40 at 100C(13.5 cSt).

With an oil temp gauge, if the OEM grade is at less than 100C after a long drive, then 1 or 2 thinner grades can be used without problem.
_________________________
'94 Lexus LS400
'00 MB E430
'04 Honda S2000
'06 Volvo V70
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

Top
#2897624 - 02/06/13 04:17 PM Re: Blending Viscosities Calculator [Re: jstutz]
oldhp Offline


Registered: 06/28/12
Posts: 998
Loc: Southern Illinois
_________________________
2014 RAM Express 3.6/8 speed work truck.
2012 Equinox 2.4-Wife's Ride


Top
#2897836 - 02/06/13 07:19 PM Re: Blending Viscosities Calculator [Re: Donald]
jstutz Offline


Registered: 10/06/08
Posts: 1522
Loc: NC
Originally Posted By: Donald
But this just does it for virgin oil. What about oil with 100 hours or 1000 hours. There is plenty of good oil available at various weights, do not see the point in mixing.


Sure there are plenty of weights available but maybe there are a few odd quarts laying around you want to use up and just would like to know about what your mixture is. As far as 1000 hrs on the oil, no calculator could predict that unless you did one for every specific oil. Different oils have too many properties to just lump into a single (simple) equation. I think i see your point though. I myself am not a big fan of mixing but every once in a while i have a few odd quarts lying around.

Top
#2897840 - 02/06/13 07:24 PM Re: Blending Viscosities Calculator [Re: oldhp]
jstutz Offline


Registered: 10/06/08
Posts: 1522
Loc: NC
Originally Posted By: oldhp


This calculator should give you similar answers as the widman charts but it is local and you can manipulate as you wish. I just wanted something that i could control on my own and build my own data base that is important to me. Nothing is stopping you from saving one as 10w30 comparisons and others as something else or expanding on this calculator to do anything you would like to tailor it towards.

There is a lot that goes into blending a motor oil and it should most likely be left up to the blender as to what works best together. This tool just gives us something to play with.

Check out how thick some of the dino gear oils get when very cold.

If there was something else you all would like to see in the calculator i would be more than happy to add it to it.


Edited by jstutz (02/06/13 07:26 PM)

Top
#2897865 - 02/06/13 07:59 PM Re: Blending Viscosities Calculator [Re: jstutz]
cp3 Offline


Registered: 07/26/06
Posts: 2643
Loc: Kitchener, Ontario, Canada
Thanx again, been using this and a couple modified variations for quite a while now.
_________________________
Dodge Charger|Pennzoil Platinum 5w20|Mopar MO-744
Pontiac G6 GT|Mobil 1 0w40|Mobil 1 M1-101

Top
#2897875 - 02/06/13 08:07 PM Re: Blending Viscosities Calculator [Re: oldhp]
ARB1977 Offline


Registered: 06/12/05
Posts: 4584
Loc: North Texas
Originally Posted By: oldhp

Pretty cool, thanks.
_________________________
2002 Tacoma 3.4L 168K (as of 03-11-15)
M1 HM 5W30 / Mobil One filter

2008 CRV 2.4L 125K (as of 04-21-15)
PP 0/5W20 mix / Fram Ultra filter

Top