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#4443332 - 06/27/17 11:59 PM How to clean out a 200k old 1MZ-FE on a Toyota
zerosoma Offline


Registered: 08/12/11
Posts: 2310
Loc: Omaha, NE
Just bought a 2002 Toyota Solara for an AMAZING deal. I love this car already so much. But I realized there IS sludge underneath the oil cap and in through the fill hole. Doesn't look terrible, but it's obvious this has seen better days. There is a very small leak (a couple drops every week or so) on the pavement.

I don't want to buy a whole bunch of synthetic oil because I already have a bunch (mostly conventional Havoline and QSGB). Is Pennzoil still the king of clean around these parts? Should I use some short conventional intervals with Motor Flush or Seafoam? Just wanna clean it up a bit. Thanks.
_________________________
2004 Hyundai Santa Fe LX 3.5L V6 (140k)
*[EDGE 5w20]
2002 Toyota Solara 3.0L V6 (217k)
*[Havoline 10w30/Syn 10w30]
2018 Toyota Rav4 Limited Hybrid (4k)
*[SuperTech Syn 0w20]

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#4443339 - 06/28/17 12:08 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
I'd try a mild and passive regime of PYB for sure. For me, it unstuck a compression ring in a 2.2 Camry to my surprise.

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#4443351 - 06/28/17 12:39 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
TheKracken Offline


Registered: 04/18/17
Posts: 515
Loc: Fort Worth TX
I would use either a HDEO like rotella for the cleaning properties or Pennzoil. Depending how bad it is I might run a oil change with only a few hundred miles on it and keep increasing the miles I let the oil stay in as it cleans up.
_________________________
2011 Prius 96k miles RLI 5w20
97 Toy T100 4x4: amsoil 0w20 242k Miles
04 Toy Sienna awd: Pennzoil 0w20 281k Miles

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#4443359 - 06/28/17 01:05 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
PimTac Online   content


Registered: 03/04/17
Posts: 4343
Loc: Soviet State of Washington
Your conventional Havoline and Quaker State you already have will do fine.
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#4443371 - 06/28/17 01:49 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
Oro_O Offline


Registered: 09/20/14
Posts: 1352
Loc: Seattle-ish, WA
Hold on a minute -

You see sludge on the baffle under the oil cap, or you see it if you look sideways through the slot and several inches away? Because a lot of people get tricked by the oil baffle on these engines. Oil naturally cooks there and that's not what the inside looks like. A quirck of the anti-splash baffle. Some people get annoyed with it and cut it out of the front VC when it's off.

Also, a 2002 is after the VC revision and if it had anything resembling oil changes once in a while, it should not be sludged. This model year and engine is not a "sludger."

That all said, if it's dripping oil, you should check the exhaust side of the back bank VCG by running your hand back - no way to visualize it, even with a mechanic's mirror. This is the normal source of most leaking, and you really should pull the intake and then the valve covers and change them as well as the plugs (since it's a nightmare to repeat the process again for them). Now you can really see what is going on.

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#4443377 - 06/28/17 01:55 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
FlyNavyP3 Offline


Registered: 07/04/16
Posts: 1407
Loc: Jacksonville, FL
Don't worry about what you see on the oil baffle. My 2004 3MZFE has crunchy stuff on the baffle but just returned only 3 ppm iron on a 10,333 mile OCI. Just service every 5k with whatever oil you have if you're worried.

My UOA can be found over in the UOA section, I don't think you have anything to worry about.
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#4443403 - 06/28/17 04:28 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: Oro_O]
HKPolice Offline


Registered: 03/31/12
Posts: 511
Loc: Toronto, Canada
Originally Posted By: Oro_O
Hold on a minute -

You see sludge on the baffle under the oil cap, or you see it if you look sideways through the slot and several inches away? Because a lot of people get tricked by the oil baffle on these engines. Oil naturally cooks there and that's not what the inside looks like. A quirck of the anti-splash baffle. Some people get annoyed with it and cut it out of the front VC when it's off.

Also, a 2002 is after the VC revision and if it had anything resembling oil changes once in a while, it should not be sludged. This model year and engine is not a "sludger."

That all said, if it's dripping oil, you should check the exhaust side of the back bank VCG by running your hand back - no way to visualize it, even with a mechanic's mirror. This is the normal source of most leaking, and you really should pull the intake and then the valve covers and change them as well as the plugs (since it's a nightmare to repeat the process again for them). Now you can really see what is going on.


The oil sludge class action lawsuit covered V6s upto 2002, are you sure all 2002 MY 1MZ engines are fixed? What did they do to fix it BTW?

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#4443421 - 06/28/17 05:35 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: Oro_O]
JC1 Offline


Registered: 11/29/08
Posts: 3019
Loc: Oshawa, Ontario Canada
Originally Posted By: Oro_O
Hold on a minute -

You see sludge on the baffle under the oil cap, or you see it if you look sideways through the slot and several inches away? Because a lot of people get tricked by the oil baffle on these engines. Oil naturally cooks there and that's not what the inside looks like. A quirck of the anti-splash baffle. Some people get annoyed with it and cut it out of the front VC when it's off.

Also, a 2002 is after the VC revision and if it had anything resembling oil changes once in a while, it should not be sludged. This model year and engine is not a "sludger."

That all said, if it's dripping oil, you should check the exhaust side of the back bank VCG by running your hand back - no way to visualize it, even with a mechanic's mirror. This is the normal source of most leaking, and you really should pull the intake and then the valve covers and change them as well as the plugs (since it's a nightmare to repeat the process again for them). Now you can really see what is going on.


+1.remove the front valve cover and you'll see what's really going on. I had a 98 sienna with a bit of sludge in the corners. Never had an issue.

Just make sure you change the PCV valve.
_________________________
2015 Grand Caravan SXT Plus 5w-20 PPPP/Wix Filter
1997 Honda Civic CX 5w-30 PPPP/Mahle Filter

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#4443481 - 06/28/17 07:30 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
barkingspider Offline


Registered: 12/22/13
Posts: 2052
Loc: socal
I recommend fixing the oil leak first. Then I would do a 5 min motor flush type on the next oil change. Then use your stash oil w 5k oci as recommended by flynavy
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17 Cadillac ATS (wife)
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#4443500 - 06/28/17 07:50 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
kschachn Offline


Registered: 12/26/05
Posts: 9420
Loc: Upper Midwest
Originally Posted By: zerosoma
Just bought a 2002 Toyota Solara for an AMAZING deal. I love this car already so much. But I realized there IS sludge underneath the oil cap and in through the fill hole. Doesn't look terrible, but it's obvious this has seen better days. There is a very small leak (a couple drops every week or so) on the pavement.

As has already been mentioned, there is no way to determine anything about that engine by looking through the fill hole. The baffle is in the way and is coated with a black, sort of gritty material from the factory. Numerous people on here and elsewhere have been fooled into thinking this baffle is representative of the engine condition but it is supposed to look like that.

The only way to gauge condition is to pull the valve cover. The front one is easy and with the way they usually leak it's generally due for replacement anyway. But pulling the back one is more representative and is likely the cause of any leaks you are seeing on the ground. Due to the extra work required to replace that gasket it is often neglected.

Do not use any flush or cleaner until you positively determine there is any need to do so. I also wouldn't use anything but a high quality synthetic oil in this engine on a relatively short OCI regardless of whether it is one of the sludge prone engines or not. Just my opinion on that, take it for what it's worth. But it's gotten me the miles I've done on my 1MZ-FE.
_________________________
1994 BMW 530i, 227K
1996 Honda Accord, 262K
1999 Toyota Sienna, 394K
2000 Toyota ECHO, 267K

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#4443523 - 06/28/17 08:14 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
Swifty Offline


Registered: 10/12/11
Posts: 86
Loc: Nor Cal
Having owned a 99 Camry with the 1MZ I second making sure the PCV is changed out. I would run Pennzoil Ultra, Amsoil, maybe a good HDEO for a while with shorter intervals. Mine had Synthetic run in it from day 1 with 7500-10k intervals and when I pulled the VC's as they were weeping a bit there were no visible signs of sludge at 130k miles. First half of its life was on M1 and the second half on Amsoil.
_________________________
2013 Civic SI Sedan Amsoil 5/30 ASL Fram Ultra 77k miles

2003 Toyota Highlander PP 10/30 M1 Filter (wife's) 160k miles

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#4443607 - 06/28/17 09:46 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
3800Series Offline


Registered: 08/02/14
Posts: 1452
Loc: Gulf Coast, MS
I'm a little more aggressive in my cleaning of (new to me) vehicles. I run shorter OCI (maybe not even 1,000) I'll also add something like MMO or maybe a little seafoam at the beginning of the OCI and a day or so before changing.

If the valve cover gasket is leaking I'll take it off and clean a little. I'll try and remove what I can take out myself then when I'm satisfied I'll pour something like B12 Chem-tool over it. Close the top and let it sit in the pan over night (without the oil in it).

Pull the plug the next morning. The chem-tool tends to evaporate quickly so most of the time its just oil that has settled. Fill it up with the cheapest oil I can find an run it for 30 mins then drain it again.

I don't do flushes but I try to clean what I can to help the car. Then its just frequent changes until I stop seeing solids in the drained oil.

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#4443671 - 06/28/17 10:45 AM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
WillsYoda Offline


Registered: 10/17/15
Posts: 471
Loc: MN
I have a 1998 1mzfe with 210k miles. It runs great. No sludge, clean under the valve cover. No leaks. All it needs is any API oil 5w30. Any good oil will clean it good. High Mileage oil might clean a little more. I would not use any special flush or cleaner, although it probably won't hurt.

I've only used 3 different oils on it for the last 10 years...
1. Maxlife
2. PP HM
3. M1 HM

They all work great. Definitely change out the PVC with an OEM unit (toyota dealers charge just as much for OEM as an auto store charges for aftermarket PVCs).

The 1mzfe is a great engine. I would bet my life that your 2002 1mzfe is NOT sludged at all. You can't tell without pulling the valve cover anyway. Seeing what you have seen does not mean there is any sludge. 2002 isn't one of the years famous for 1mzfe sludging, and only about 1-2% of the famous 1mzfe sludge year engines had significant sludge. The 1mzfe sludge problem has been exaggerated. Sludge mostly came from not maintaining the engine and not changing the oil enough.

Modern oils are much better now than in 2002, and toyota change the design in 2002 to avoid sludge. And will treat the engine right. I'd just use a good oil and change at 5k mile OCI for conventional/blend oils and 7.5k mile OCIs for synthetics (and a little more often for short tripping).


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#4443818 - 06/28/17 12:31 PM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: PeterPolyol]
zerosoma Offline


Registered: 08/12/11
Posts: 2310
Loc: Omaha, NE
Originally Posted By: PeterPolyol
I'd try a mild and passive regime of PYB for sure. For me, it unstuck a compression ring in a 2.2 Camry to my surprise.


What do you think of formula shell? I can get it for 10 bucks for 5 qts.
_________________________
2004 Hyundai Santa Fe LX 3.5L V6 (140k)
*[EDGE 5w20]
2002 Toyota Solara 3.0L V6 (217k)
*[Havoline 10w30/Syn 10w30]
2018 Toyota Rav4 Limited Hybrid (4k)
*[SuperTech Syn 0w20]

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#4443868 - 06/28/17 01:02 PM Re: How to clean out a 200k old 1MZ-FE on a Toyota [Re: zerosoma]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
No personal experience with FS but hear it's a very fine product.

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