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#2487632 - 01/09/12 09:22 AM This fixed oil consumption in toyota 1ZZ-FE engine
friendly_jacek Online   content


Registered: 05/04/03
Posts: 5365
Loc: southeast US
Actually it was a series of fixes. I had 2-3qts/5000 miles oil consumption in 2003 (made in 2002) Corolla since 6X,XXX miles (forgot the exact number) after a steady diet of dino oil changes every 4000-5000 miles/6 months.

I did a couple of MMO piston soaks that would help for 2000 miles or so and consumption would come back. Than, last summer i did an extra long multi-week MMO soak that partially helped and cut consumption in half. I also started filling oil above the dipstick mark as per the Toyota's TSB for this engine.

Before next oil change this last fall, I did Kreen piston soak and flush and started using Maxlife oil. Small consumption lasted for the first 1000 miles and disappeared since. Time will tell but so far so good (no visible consumption whatsoever) several K miles into the OCI.

Next oil changes will be synthetic to prevent the oil consumption from reappearing.

Not sure what exactly was the fix, maybe a combination, but it worked. MMO piston soaks themself seemed least effective.

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#2487658 - 01/09/12 09:44 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
Hokiefyd Online   content


Registered: 06/24/04
Posts: 11438
Loc: North Carolina
It sounds like you may have had some stuck piston rings that loosened up with the repeated cleansing steps. Nice job!
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2008 Honda CR-V EX-L (QSUD 5W-30)
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#2487666 - 01/09/12 09:48 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
panthermike Offline


Registered: 04/01/08
Posts: 3166
Loc: Phoenix, AZ
We have the same model year with 89,000 miles, no oil burning. I've heard of it though, even on post 2002 1ZZFE's(as seen here). I hope this doesn't happen to ours. I mainly use Synthetic and I'll keep it that way.

Nice job on getting it done.
_________________________
'10 Mazda 6; QSUD 5w20 + Ceratec/MC Filter 32K mi
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'77 F250 "Ol Yeller"; Delvac/RL Mix +AR9100


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#2487673 - 01/09/12 09:53 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
synthetic_crazy Offline


Registered: 06/23/10
Posts: 793
Loc: TX
I have a '99 Corolla that burns about a quart every 1500 miles. Mobil 1 has seemed to help my consumption. I am interested in reading that TSB on the 1 zzfe that you mentioned. I tried a search but haven't located it; can you direct me in locating it?
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#2487678 - 01/09/12 09:59 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: synthetic_crazy]
friendly_jacek Online   content


Registered: 05/04/03
Posts: 5365
Loc: southeast US
Originally Posted By: synthetic_crazy
I have a '99 Corolla that burns about a quart every 1500 miles. Mobil 1 has seemed to help my consumption. I am interested in reading that TSB on the 1 zzfe that you mentioned. I tried a search but haven't located it; can you direct me in locating it?


http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2248581

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#2487722 - 01/09/12 10:57 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
synthetic_crazy Offline


Registered: 06/23/10
Posts: 793
Loc: TX
Originally Posted By: friendly_jacek
Originally Posted By: synthetic_crazy
I have a '99 Corolla that burns about a quart every 1500 miles. Mobil 1 has seemed to help my consumption. I am interested in reading that TSB on the 1 zzfe that you mentioned. I tried a search but haven't located it; can you direct me in locating it?


http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2248581


Very much appreciated! Thank you!
_________________________
Current fill in Crown Vic: Mobil 1 5w-20
"In God we trust; all others must bring data"
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#2487929 - 01/09/12 02:17 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
ltslimjim Offline


Registered: 08/06/10
Posts: 5143
Loc: PL&F
Just a thought, but why not stick with Max Life for one more OCI before going to a full synthetic?

Thanks for sharing your experience either way.
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#2488018 - 01/09/12 03:34 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
I don't see how overfilling will help any consumption or leak problems.
BTW, if you think MMO was the least effective at stopping burning, wait until you use the full synthetic. A real waste in that dept!

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#2488061 - 01/09/12 04:06 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: ltslimjim]
friendly_jacek Online   content


Registered: 05/04/03
Posts: 5365
Loc: southeast US
Originally Posted By: ltslimjim
Just a thought, but why not stick with Max Life for one more OCI before going to a full synthetic?


LOL, I'm doing both! Maxlife 10W30 synthetic will be the first synthetic oil. This is the FAR oil from back then. This will be a consolidation phase not unlike chemotherapy. After that is gone, I've got a stash of various synthetic oils bough on clearance or deep rebates. That would be considered a maintenance phase.

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#2488066 - 01/09/12 04:11 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: mechtech2]
friendly_jacek Online   content


Registered: 05/04/03
Posts: 5365
Loc: southeast US
Originally Posted By: mechtech2
I don't see how overfilling will help any consumption or leak problems.
BTW, if you think MMO was the least effective at stopping burning, wait until you use the full synthetic. A real waste in that dept!


Overfilling lowers oil temp, lowering high temp deposits on pistons/rings.

Synthetic may not fix oil consumption but will certainly avoid it from recurring due to piston/ring deposits due to oil oxidation.

Both applicable only in susceptible engines with high piston temps.

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#2488105 - 01/09/12 04:50 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
91344George Offline


Registered: 11/23/11
Posts: 1082
Loc: CA
It was likely the Maxlife oil that helped to eliminate the oil consumption not the MMO or Kreen.

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#2488174 - 01/09/12 05:37 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
ekko Offline


Registered: 11/08/08
Posts: 28
Loc: carson CA
The main problem is the clogged oil holes in the pistons. So, the oil can't move, and it burns.

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#2488773 - 01/10/12 08:13 AM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: ekko]
friendly_jacek Online   content


Registered: 05/04/03
Posts: 5365
Loc: southeast US
yes, I knew that and thought I was fighting a loosing battle. Now, I have a hope.

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#2489202 - 01/10/12 04:05 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: friendly_jacek]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
Originally Posted By: friendly_jacek
Originally Posted By: mechtech2
I don't see how overfilling will help any consumption or leak problems.
BTW, if you think MMO was the least effective at stopping burning, wait until you use the full synthetic. A real waste in that dept!


Overfilling lowers oil temp, lowering high temp deposits on pistons/rings.

Synthetic may not fix oil consumption but will certainly avoid it from recurring due to piston/ring deposits due to oil oxidation.

Both applicable only in susceptible engines with high piston temps.


Overfilling may INCREASE oil temps. The crank , rods, and pistons are shearing more oil. The film on the pistons/ bores/ and rings is the same with high or low oil levels. The temps there won't change. If any extra oil did get in there, it would result in more oil use, and probable carbon build up.
A synthetic oil won't fix worn bores or rings.


Edited by mechtech2 (01/10/12 04:06 PM)

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#2489279 - 01/10/12 05:11 PM Re: This fixed oil consumption in toyota 1ZZ-FE engine [Re: mechtech2]
CATERHAM Online   content


Registered: 11/18/05
Posts: 9582
Loc: Burlington, Ontario, Canada
Originally Posted By: mechtech2
Originally Posted By: friendly_jacek
Originally Posted By: mechtech2




Overfilling may INCREASE oil temps. The crank , rods, and pistons are shearing more oil. The film on the pistons/ bores/ and rings is the same with high or low oil levels. The temps there won't change. If any extra oil did get in there, it would result in more oil use, and probable carbon build up.

Don't agree.
Raising the oil sump level will reduce oil temp's, by both increasing the time it takes for oil temp's to rise and the maximum oil temp's acheived.
The disadvantage is a possible increase in oil aeration but that would be very much engine specific.
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74 Lotus Europa 5W-50
86 Porsche 928S TGMO 0W-20 25%/M1 0W-40
96 BMW 328i Idemitsu/TGMO 0W-20 70%/M1 0W-40
94 Caterham 7 Sustina 0W-20 80%/0W-50

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