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Carbon buildup on Toyota pistons and rings #4676756
02/24/18 05:03 PM
02/24/18 05:03 PM
Joined: Feb 2003
Posts: 7,677
Jupiter, Florida
Cujet Offline OP
Cujet  Offline OP
Joined: Feb 2003
Posts: 7,677
Jupiter, Florida
https://www.youtube.com/watch?v=PgdZSXOslDM

I repeatedly mention that a quality synthetic oil is a must in modern engines. The above video clearly indicates why.


People who count on their fingers should maintain a discreet silence.
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676759
02/24/18 05:07 PM
02/24/18 05:07 PM
Joined: Mar 2016
Posts: 1,556
Toronto
PeterPolyol Offline
PeterPolyol  Offline
Joined: Mar 2016
Posts: 1,556
Toronto
This is why VMs are bad. Synthetic, Conventional doesn't matter to me, just give me as straight as you've got. happy


Scambling for solutions is a hopelessly futile endeavour and potentially dangerous, without first coming to a solid, personal understanding of the problem. Beware riding the ideological hobby horse.
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676771
02/24/18 05:24 PM
02/24/18 05:24 PM
Joined: Nov 2006
Posts: 20,564
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,564
MA, Mittelfranken.de
I guess that why we don't see any dino dexos oils. +1 on synthetic being a must in modern engines, dino should be reserved for pre emission control engines only IMO.


ASE L1, Master. Deutsch Meisterbrief.
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676783
02/24/18 05:42 PM
02/24/18 05:42 PM
Joined: Jan 2009
Posts: 13,974
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,974
Illinois
Cujet,
Thanks for posting this. For those that say varnish is harmless(mostly caused by oil oxidation) are wrong in some cases, because when oil oxidizes ring coking can occur as seen in video. The varnished head looked fare with some varnish, but the rings were coked(I have seen much worse) which leads to oil blow by and oil consumption. A quality synthetic will prevent this. In 40 years of synthetic oil use at 10K OCIs I have never had this problem.


2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Carbon buildup on Toyota pistons and rings [Re: tig1] #4676788
02/24/18 05:49 PM
02/24/18 05:49 PM
Joined: Feb 2009
Posts: 1,585
wv
krismoriah72 Offline
krismoriah72  Offline
Joined: Feb 2009
Posts: 1,585
wv
I thought this was a manufacturing defect. They extended the warranty because they knew they used defective parts.

Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676798
02/24/18 05:55 PM
02/24/18 05:55 PM
Joined: Dec 2013
Posts: 2,098
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,098
socal
Why are there tons of vehicles, especially Toyota’s that have over 200k miles on original motors using nothing but conventional oil?


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: Carbon buildup on Toyota pistons and rings [Re: barkingspider] #4676804
02/24/18 06:02 PM
02/24/18 06:02 PM
Joined: Jan 2009
Posts: 13,974
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,974
Illinois
Originally Posted By: barkingspider
Why are there tons of vehicles, especially Toyota’s that have over 200k miles on original motors using nothing but conventional oil?


Ring and piston design and shorter OCIs. Perhaps

Last edited by tig1; 02/24/18 06:03 PM.

2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676828
02/24/18 06:30 PM
02/24/18 06:30 PM
Joined: Dec 2017
Posts: 1,310
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,310
US
Subbed for when I have the time to watch.


I'm a thickie; assimilate
But 20s have their place

Using AMSOILâ„¢

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w30/Wix

Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676867
02/24/18 07:11 PM
02/24/18 07:11 PM
Joined: May 2014
Posts: 1,387
Minnesota
philipp10 Offline
philipp10  Offline
Joined: May 2014
Posts: 1,387
Minnesota
I have this motor. At around 60k I noticed the oil consumption went way up. I was using about a quart every 1200 miles. The warranty extension states I must use MORE than a quart every 1200 miles. The warranty extension is for 10 years. I happened to switch to synthetic around that time, due to living in Minnesota and realizing I would improve winter starting. From 60k to about 90 k miles I have been dumping in a quart every 1200 miles. In the last 6 months though, it seems the oil consumption has dropped. I am unsure if the synthetic did it, but it is better. I think around a quart every 2000. Maybe in a design where the oil is hanging up in the oil control rings (too small holes), synthetic flows better. I don't know.

Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676871
02/24/18 07:18 PM
02/24/18 07:18 PM
Joined: Jun 2004
Posts: 2,471
St. Louis
MONKEYMAN Offline
MONKEYMAN  Offline
Joined: Jun 2004
Posts: 2,471
St. Louis
Is it poor design or the oil? With my S-Series Saturn design was the issue. Synthetic oil helped reduce oil consumption if used early.

I feel a little confused. Some say any oil that meets spec will be fine in my Elantra. Trav just said synthetic oil is a must in modern engines. I have high regard for Trav.

Experience tells me it is easier to keep and engine clean with synthetic oil than clean an engine once rings are coked. On the other hand Hyundai does not require synthetic oil.

My head is hurting now. duh


Truth alone triumphs, not untruth.

2017 Elantra SE
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676882
02/24/18 07:29 PM
02/24/18 07:29 PM
Joined: Dec 2016
Posts: 137
Long Island, N.Y.
incognito_2u Offline
incognito_2u  Offline
Joined: Dec 2016
Posts: 137
Long Island, N.Y.
So, As you can see, The 1999 Corolla that's in my sig is a car that's notorious for burning Oil......a product of not enough drain holes or too small a drain hole by the Piston oil control ring groove that eventually gets "clogged" and creates an "oil Burning" condition. Now the car in question was purchased 10 months ago, used, from a little old lady (literally) who had the car serviced by a reputable Service center in the area that has a great reputation of doing quality Work for a fair price.....upon looking at the service records of the vehicle (specifically the Oil Change records), the Oil used was Bulk dino Pennzoil 5W30 with a Pennzoil Oil filter, approximately every 5000miles/6 months. What I have done to possibly prevent this from being an issue was to give it an initial "Kreen" piston soak and to change the Oil to 5W30 Pennzoil Ultra Platinum with an Fram Ultra Filter.
I truly believe that the steps I took to cure/prevent the oil burning issue have worked!! LOL
So far, 4 thousand miles on the car since purchase and it hasn't burned a drop of oil......

Last edited by incognito_2u; 02/24/18 07:34 PM.

2006 Jeep Commander 3.7 V6 -110k (PUP/XG3600)
2006 Toyota Corolla 1.8 VVTi -79k (PPHM/XG4386)
1999 Toyota Corolla 1.8 -80k (PUP/XG4386)
1998 Toyota Corolla 1.8 -62k (PUP/XG4386)
Re: Carbon buildup on Toyota pistons and rings [Re: MONKEYMAN] #4676912
02/24/18 07:52 PM
02/24/18 07:52 PM
Joined: Jul 2003
Posts: 4,893
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,893
New Zealand
Originally Posted By: MONKEYMAN
Is it poor design or the oil?


If it was the oil, then every engine would be having problems if they weren't using the most expensive oil on the shelf. Obviously a problem specific to these engines. And there are a lot of engines out there with specific problems, on a lot of them using the wrong oil can cause the problem...but it's not the oil that's the problem, it's engine design.


1987 BMW R65 - Aegis SAE30
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676928
02/24/18 08:02 PM
02/24/18 08:02 PM
Joined: Jun 2005
Posts: 5,275
North Texas
ARB1977 Offline
ARB1977  Offline
Joined: Jun 2005
Posts: 5,275
North Texas

Here’s the top of one of my pistons on my 2015 Tacoma. No oil burning. Going to try Amsoil PI every 5K till 30K when it’s time to change plugs again and hopefully it cleans it up.


2015 Tacoma 4.0L 60K (as of 02/23/18)
AMSOIL SS 0W30 / Toyota filter

2018 CRV 1.5L (as of 05/11/18)
Factory fill / Honda filter
Re: Carbon buildup on Toyota pistons and rings [Re: tig1] #4676983
02/24/18 09:06 PM
02/24/18 09:06 PM
Joined: Mar 2016
Posts: 1,627
Western S.C.
CR94 Offline
CR94  Offline
Joined: Mar 2016
Posts: 1,627
Western S.C.
Originally Posted By: tig1
... In 40 years of synthetic oil use at 10K OCIs I have never had this problem.
I've never heard of a reasonably maintained Ford with this problem, regardless of oil type.


2011 Toyota Prius now at 94K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Carbon buildup on Toyota pistons and rings [Re: Cujet] #4676999
02/24/18 09:19 PM
02/24/18 09:19 PM
Joined: Dec 2016
Posts: 7,117
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,117
Waco, TX
skip to 37:00



"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
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