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Blotter Spot Test Procedure #4631470
01/11/18 02:01 PM
01/11/18 02:01 PM
Joined: Jul 2017
Posts: 183
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP
Joined: Jul 2017
Posts: 183
Venezuela, South America
I want to start perfoming blotter spot tests every 500 miles to see how the oil is perfoming on my car, I know that this kind of test canīt replace a UOA but I want to start getting used to this kind of test so I can know when a specific oil brand is performing worse than others.

What procedure should I use? Can I use printer paper or should I use a thicker paper? Should I perform the test when the engine is at operating temp or cold?

I want to learn how to do this test in as accurately as I can.

Re: Blotter Spot Test Procedure [Re: Emanuel] #4631474
01/11/18 02:07 PM
01/11/18 02:07 PM
Joined: Jun 2014
Posts: 1,774
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,774
Ca.
buy a premade test - they are cheap and use tested paper.

If you don't do this comparisons will be meaningless unless you use the exact same paper and light sources every test.

You could use a stack of the same business cards

I always did it hot per the instructions in the kits - they being the debris kept in suspense will tend to fall out making a cold sample look better than a hot one.

how much it matters - hard to say.


UD

Last edited by UncleDave; 01/11/18 02:10 PM.

Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631511
01/11/18 02:40 PM
01/11/18 02:40 PM
Joined: Mar 2004
Posts: 20,758
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,758
Upstate NY
White coffee filter


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631513
01/11/18 02:41 PM
01/11/18 02:41 PM
Joined: Jun 2014
Posts: 1,774
Ca.
UncleDave Offline
UncleDave  Offline
Joined: Jun 2014
Posts: 1,774
Ca.
too porous


UD


Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631599
01/11/18 04:19 PM
01/11/18 04:19 PM
Joined: May 2005
Posts: 10,281
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline
Joined: May 2005
Posts: 10,281
ROCHESTER, NY
I've always heard here at Bob's that, 3x5 index cards were ideal.

Last edited by Char Baby; 01/11/18 04:20 PM.

"Retired"
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631762
01/11/18 07:39 PM
01/11/18 07:39 PM
Joined: Sep 2015
Posts: 2,260
Malaysia
zeng Offline
zeng  Offline
Joined: Sep 2015
Posts: 2,260
Malaysia
I've played around with business cards, newsprint and A4 size letter head paper and 70gm printing paper.
Currently settle at printing paper, 80 gm would work as well I suppose.

I did it hot(after more than 30 minutes drive) , as the blotter 'spreads' better and starting off at say 5000 km,followed by every other 1500/2000 km interval frequencies.

Check out on some reading sites here from members within the thread.
Blotter spot test is free and easy. It helps me in qualitative aspect.

Last edited by zeng; 01/11/18 07:41 PM.
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631830
01/11/18 09:06 PM
01/11/18 09:06 PM
Joined: Jun 2011
Posts: 722
Kansas City, MO
yesthatsteve Offline
yesthatsteve  Offline
Joined: Jun 2011
Posts: 722
Kansas City, MO
With my last car I used a pack of perforated sheets of blank business cards for printers. Tore off a new card every time I took a sample. After the sample set up, I wrote the date the mileage and the oil/filter combination on the card. Then they went in a binder with plastic business card pages so I could compare over time and test extending OCIs.

I may start doing the cards again once the Buick's out of factory warranty next year and the Honda's oil consumption TSB expires at 125k miles. Right now, I just check the levels once a month and call it good.


'13 LaCrosse eAssist, 50000+ miles | Magnatec 5w30 & Fram EG
'11 Accord I4 Sedan, 95000+ miles | Mobil1 0w20 & Fram EG
Re: Blotter Spot Test Procedure [Re: Emanuel] #4631848
01/11/18 09:35 PM
01/11/18 09:35 PM
Joined: Jan 2009
Posts: 13,837
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,837
Illinois
I do the one drop test at about 8K into a 10K OCI. I use the back of my welding business cards.

http://www.gwrauto.com/One%20Drop.htm

Last edited by tig1; 01/11/18 09:37 PM.

2007 Ford Fusion 232,000 miles
M1 0-20 EP
2017 Ford Fusion 55K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters

Re: Blotter Spot Test Procedure [Re: Donald] #4631883
01/11/18 10:03 PM
01/11/18 10:03 PM
Joined: Aug 2004
Posts: 4,639
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,639
Katy, Republic of Texas
Originally Posted By: Donald
White coffee filter

I did not like it when I tried them (the red circle is a drop of fresh oil to compare to).


and 3 days later:


Originally Posted By: Char Baby
I've always heard here at Bob's that, 3x5 index cards were ideal.

That is what I use now.
I had tried business cards, but some cards have a funny coating on them, and a pack of 3x5 cards is cheap and leave space to write info on it if you want too.


1994 Honda VT1100: Peak 15w-40/PSL/2500 mile OCI
2002 Ford F150: GTX HM 5w-20/EcoGard Syn/1yr OCI
2012 Scion xB: QSUD 0w-20/CQ Blue/5k OCI

Re: Blotter Spot Test Procedure [Re: Emanuel] #4636943
01/16/18 05:36 PM
01/16/18 05:36 PM
Joined: Jul 2017
Posts: 183
Venezuela, South America
Emanuel Offline OP
Emanuel  Offline OP
Joined: Jul 2017
Posts: 183
Venezuela, South America
This are the results using 75 g/m2 printing paper, I took the sample 15 minutes after the engine was shutdown at operating temp, I let the drop dry for 2 days. The oil is 1725 miles old by the way.




What do you think about using this kind of paper? Could a different paper give me better results?

Re: Blotter Spot Test Procedure [Re: Emanuel] #4637008
01/16/18 06:46 PM
01/16/18 06:46 PM
Joined: Jul 2003
Posts: 4,755
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,755
New Zealand
I rip the lid off the oil filter carton and use that.


1987 BMW R65 - Penrite V Twin 20/50
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.

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