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TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC #4988042
01/22/19 10:38 PM
01/22/19 10:38 PM
Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Gokhan Offline OP
Gokhan  Offline OP

Joined: Dec 2010
Posts: 4,234
Los Angeles, California
1985 Toyota Corolla LE, 4A-LC engine
Mobil 1 Extended Performance M1-103 oil filter
5142 miles and 622 days on oil (yes, almost two years)
Mostly short trips (probably hard on oil)
Sampled through the dipstick using the Blackstone vacuum pump
Oil level was about 0.3 quart low, slightly more consumption than the previous 0.2 quarts
No makeup oil used
UOA by Wear Check
Oil used was TGMO 0W-20 SN ©2015. It turned out that it had no high moly and probably no GTL either!

The results are similar to those in the past, including for M1 0W-40, except for copper, which came almost twice as much this time. Lead was low. Aluminum was low. Chromium is still a tad bit high. Iron is normal. TAN and TBN are both good.

It's hard to say whether thick or thin is better. However, M1 had the best results on chromium. Perhaps I'll try a thick 15W-40 this time to see what it does.

I'm not sure if the premium, high-efficiency oil filter helped but lead was good.

I also don't know where the extra copper came from but perhaps there was some bearing wear.

It looks like the coolant seep has stopped.

[Linked Image]
[Linked Image]


1985 Toyota Corolla LE, 4A-LC engine, ~ 274,000 M
Mobil 1 Extended Performance 0W-20 SN PLUS (PAO-and-AN-based)
Fram Ultra XG3600 filter (full synthetic), 90430-12031 drain gasket (rubber on aluminum)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988054
01/22/19 11:02 PM
01/22/19 11:02 PM
Joined: Mar 2016
Posts: 1,719
Toronto
PeterPolyol Offline
PeterPolyol  Offline

Joined: Mar 2016
Posts: 1,719
Toronto
Yeah coolant or not, the 0W40 dropped ring wear a bit. I bet this engine has at least 1.5mm thick rings at full tension. When was your last head gasket?


There's no replacement...'scosity for natural viscosity
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: PeterPolyol] #4988058
01/22/19 11:10 PM
01/22/19 11:10 PM
Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Gokhan Offline OP
Gokhan  Offline OP

Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Originally Posted by PeterPolyol
Yeah coolant or not, the 0W40 dropped ring wear a bit. I bet this engine has at least 1.5mm thick rings at full tension. When was your last head gasket?

Still the original head gasket.


1985 Toyota Corolla LE, 4A-LC engine, ~ 274,000 M
Mobil 1 Extended Performance 0W-20 SN PLUS (PAO-and-AN-based)
Fram Ultra XG3600 filter (full synthetic), 90430-12031 drain gasket (rubber on aluminum)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988107
01/23/19 01:09 AM
01/23/19 01:09 AM
Joined: Dec 2018
Posts: 154
Texas, USA
PPWarrior Offline
PPWarrior  Offline

Joined: Dec 2018
Posts: 154
Texas, USA
What lots of folks with 4cylinder toyota engine is to put 20w50 when I lived back in Mexico. 80s toyota pickups still hauling 2 or 3 metric tons on the daily.

Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988132
01/23/19 04:29 AM
01/23/19 04:29 AM
Joined: May 2005
Posts: 11,289
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline

Joined: May 2005
Posts: 11,289
ROCHESTER, NY
That's quite a detailed lab report from Wear Check. smile

I also see that back in 1985(probably quoting the OM), 5W30 was not recommended. However, that would be different today.

May I ask just for my own curiosity, how many total miles are on this engine?


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

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Char Baby] #4988149
01/23/19 06:06 AM
01/23/19 06:06 AM
Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Gokhan Offline OP
Gokhan  Offline OP

Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Originally Posted by Char Baby
May I ask just for my own curiosity, how many total miles are on this engine?

The mileage info is shown on the UOA. 271,627.4 miles at the last sample on January 12, 2019.

[Linked Image]


1985 Toyota Corolla LE, 4A-LC engine, ~ 274,000 M
Mobil 1 Extended Performance 0W-20 SN PLUS (PAO-and-AN-based)
Fram Ultra XG3600 filter (full synthetic), 90430-12031 drain gasket (rubber on aluminum)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988157
01/23/19 06:29 AM
01/23/19 06:29 AM
Joined: Apr 2016
Posts: 1,292
KS
FordBroncoVWJeta Online content
FordBroncoVWJeta  Online Content

Joined: Apr 2016
Posts: 1,292
KS
Why 0w-20?


2017 Volkswagen Jetta 1.4T - 2015 Honda CRV 2.4 - 2012 Volkswagen Jetta 2.0 - 2007 Chevy Trailblazer 4.2 - 2003 Ford Taurus 3.0 Vulcan
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988231
01/23/19 08:23 AM
01/23/19 08:23 AM
Joined: May 2005
Posts: 11,289
ROCHESTER, NY
Char Baby Offline
Char Baby  Offline

Joined: May 2005
Posts: 11,289
ROCHESTER, NY
Hmmm, 271K! that's a lot of miles on any engine regardless of how old/young the engine is. And living where it's warm all year, I'd use something slightly heavier...or not! IDK, something like 10W30 in your 100F summer and 5W30 the other times of year.

At this point in terms of years & miles, IDK if it even matters any longer.

^^^ I'm saying that to be funny because, well really, who knows?


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

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic LX
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988334
01/23/19 10:45 AM
01/23/19 10:45 AM
Joined: Oct 2010
Posts: 5,473
Florida
Artem Offline
Artem  Offline

Joined: Oct 2010
Posts: 5,473
Florida
The sample was pulled in 2013 and you are JUST NOW posting it? crzy


2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart. (thanks Advance Auto Parts for the awesome deal)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Artem] #4988392
01/23/19 11:36 AM
01/23/19 11:36 AM
Joined: Mar 2017
Posts: 9,328
...
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 9,328
...
Originally Posted by Artem
The sample was pulled in 2013 and you are JUST NOW posting it? crzy




Look at the previous report.


2017 Mazda CX5
Havoline Pro DS 0w20
Roki OEM filter.
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988577
01/23/19 02:31 PM
01/23/19 02:31 PM
Joined: Jul 2018
Posts: 52
East Europe
DrDanger Offline
DrDanger  Offline

Joined: Jul 2018
Posts: 52
East Europe
What was you fuel economy with the 0w20 compared to a 0w40 oil? Zinc additive used?
How do you rate your copper wear result and did using a thinner oil on a 270k mile engine cause issues?

Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: DrDanger] #4988814
01/23/19 06:45 PM
01/23/19 06:45 PM
Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Gokhan Offline OP
Gokhan  Offline OP

Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Originally Posted by Artem
The sample was pulled in 2013 and you are JUST NOW posting it? crzy

The UOAs are in reverse chronological order as usual, dating from January 12, 2019, to June 27, 2012.
Originally Posted by DrDanger
What was you fuel economy with the 0w20 compared to a 0w40 oil? Zinc additive used?
How do you rate your copper wear result and did using a thinner oil on a 270k mile engine cause issues?

Fuel economy is hard to measure. It depends on driving conditions. Between 15W-40 and 0W-20, I measured up to about 8% difference when driving very gently. It could be less or more in other driving conditions, such as aggressive driving or short trips.

Interestingly, lead, which comes from the bearings, is low, whereas copper, which may also come from the bearings is high. I am more worried about chromium, which comes from the rings. I'll try a thick grade next time to see what happens, especially with chromium. Iron, which comes from the valvetrain, is normal.

No aftermarket oil additives where used. I used GM/ACDelco cooling-system sealing tabs before the oil change with this current oil fill for which sampling was done.


1985 Toyota Corolla LE, 4A-LC engine, ~ 274,000 M
Mobil 1 Extended Performance 0W-20 SN PLUS (PAO-and-AN-based)
Fram Ultra XG3600 filter (full synthetic), 90430-12031 drain gasket (rubber on aluminum)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988821
01/23/19 06:50 PM
01/23/19 06:50 PM
Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Gokhan Offline OP
Gokhan  Offline OP

Joined: Dec 2010
Posts: 4,234
Los Angeles, California
Any objections to Delo SDE 15W-40 CK-4/SN conventional (HTHSV = 4.2 cP, phosphorus = 760 ppm) for the next fill?

Other options are M1 15W-50 SN full synthetic, Delo XLE 5W-40 CK-4/SN PLUS full synthetic, or a ten-year-old jug of Delvac 15W-40 CJ-4/SM conventional.


1985 Toyota Corolla LE, 4A-LC engine, ~ 274,000 M
Mobil 1 Extended Performance 0W-20 SN PLUS (PAO-and-AN-based)
Fram Ultra XG3600 filter (full synthetic), 90430-12031 drain gasket (rubber on aluminum)
Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988977
01/23/19 09:39 PM
01/23/19 09:39 PM
Joined: Oct 2005
Posts: 5,211
Fredericksburg, VA
JAG Offline
JAG  Offline

Joined: Oct 2005
Posts: 5,211
Fredericksburg, VA
I say use the 10 year jug of Delvac since it has a high HTHS viscosity, has relatively modern specifications, and has been paid for already. If the money means little to you, the Delo SDE 15W-40 would be good to try as well.

Re: TGMO 0W-20 SN (Toyota), TBN/TAN, 5142 M, 85 Corolla 4A-LC [Re: Gokhan] #4988990
01/23/19 09:57 PM
01/23/19 09:57 PM
Joined: Jul 2018
Posts: 52
East Europe
DrDanger Offline
DrDanger  Offline

Joined: Jul 2018
Posts: 52
East Europe
Arent you at least a bit concerned about natural paraffin/ wax ageing/agglomeration for the dino oil?
Especially if you go more than 1 year, like on this run?
Copper as the softest metal in the engine (I could be wrong), would have to go before the lead, next liner or plating metals (I could be very wrong, chromium), due to worse bearing tolerances. I would go heavier and add some moly. Maybe blend the dino with some of the synthetic stuff.
I'll stop spamming now.

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