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#130464 - 04/18/05 07:22 AM Toyota 1ZZ-FE Engine
1911 Offline


Registered: 03/19/05
Posts: 165
Loc: Texas
Hi Everyone,

Does anybody know if the Toyota 1ZZ-FE 1794cc four cylinder unit is one of the dreaded sludge-making motors we hear about on this board? I've just swithced over from Mobil 1 5W-30 and 10W-30 to Havoline SM oils in the same grades. I hope this is not a mistake.

1911

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#130465 - 04/18/05 07:27 AM Re: Toyota 1ZZ-FE Engine
Drew99GT Offline


Registered: 10/11/02
Posts: 21072
Loc: Colorado Springs
I do not think it is. You'll be safe with any SM oil at a reasonable, common sense drain interval.

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#130466 - 04/18/05 07:33 AM Re: Toyota 1ZZ-FE Engine
Last_Z Offline


Registered: 10/21/02
Posts: 2790
Loc: San Antonio, TX
Terry Dyson says it is!

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#130467 - 04/18/05 07:40 AM Re: Toyota 1ZZ-FE Engine
Drew99GT Offline


Registered: 10/11/02
Posts: 21072
Loc: Colorado Springs
Like I said, I think it is...

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#130468 - 04/18/05 08:39 AM Re: Toyota 1ZZ-FE Engine
Bill Offline


Registered: 07/01/02
Posts: 477
Loc: Auburn Hills, Michigan
1911,

The 1zz engine is not one of the Toyota sludge
engines that you have read or heard about.
Do a search of the 1998 thru 2002 and later Toyota Corolla's and Chevrolet Prizm's (same engine) in
the UOA (Used Oil Analysis) section of this board,
you will find that the Toyota 1.8 liter engines do
not kill the oil like the 2.2 ltr 4 cylinders and 6 cyl's in Camry's.
There are some UOA's of these sludge maker engines
that are decent. [Smile]


quote from Last_Z
quote:
Terry Dyson says it is!
Last_Z,

Terry says the engine has a tendacy to get hot in the head area but the engine does not beat up the oil like the sludge engines do.

Here is a link to a UOA of that Buster's posted of a sludger engine:

Sludger Analysis


Here is the link where Terry referred to the 1ZZ engine getting hot in the head area:

Terry's Statement


Bill

[ April 18, 2005, 11:51 PM: Message edited by: Bill ]

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#130469 - 04/18/05 07:48 PM Re: Toyota 1ZZ-FE Engine
CincyGTS Offline


Registered: 05/18/04
Posts: 92
Loc: Cincinnati, OH
quote:
Originally posted by Bill:
1911,

Sludger Analysis


Here is the link where Terry referred to the 1ZZ engine getting hot in the head area:

Terry's Statement


Bill

The Sludger Analysis link refers to the V6 Sludger.

See this link Toyota engines with sludge issues for details.

Your Celica engine should be safe in this regard, just don't run ANY oil out too long, if you have doubts then run a UOA.

The 1ZZ and 2ZZ engines for the 2000+ Celica do not have this problem.

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#130470 - 04/19/05 09:12 AM Re: Toyota 1ZZ-FE Engine
Bill Offline


Registered: 07/01/02
Posts: 477
Loc: Auburn Hills, Michigan
Cincy,

I think you misunderstood the reason I posted the link above,
I purposely placed that UOA of an V6 Camry engine
(known sludger) to show that not all sludge engines will kill oil (sludge oil).

The link you posted:

quote:
See this link Toyota engines with sludge issues for details.
The celica listed on this webpage does not have the 1ZZ-FE engine (120 hp thru 130 hp),
in 1996 & 1997, the Celica had 2 4 cyl. engines:

1) 1.8 liter (105 hp, belt driven not chain driven engine like the 1ZZ-FE) same engine used in the older Corolla's and Chevrolet Prizm's

2) 2.2 liter (135 hp) same engine used in the Camry

The 1ZZ-FE engine is not on the list of 'sludge engines', neither are the 1998 through 2005 Corolla's listed.


Bill

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#130471 - 04/19/05 09:41 AM Re: Toyota 1ZZ-FE Engine
Alan Offline


Registered: 07/13/03
Posts: 1462
Loc: MD
1ZZ isn't a sludge prone design.

I pulled the valve cover off mine with around 57k on it and it was absolutely spotless!No varnish or deposits,just clean metal.

I used M1 5W30 with up to 10k intervals.

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#130472 - 04/18/05 10:24 PM Re: Toyota 1ZZ-FE Engine
2x Offline


Registered: 10/10/03
Posts: 66
Loc: Massachusetts
The 1zz-fe is not a sludger. This link has some cool info on the engine:

http://spyderchat.com/1zzfe.pdf

Just interesting stuff to read on the development of this particular engine.

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#130473 - 04/19/05 03:51 AM Re: Toyota 1ZZ-FE Engine
JohnBrowning Offline


Registered: 05/01/03
Posts: 9448
Loc: USA
One reason the head run hotter is buy design. The thin laser clad valve seats transmitt most of the heat into the head instead of useing the valve stem to radiate heat!

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#130474 - 04/19/05 04:46 AM Re: Toyota 1ZZ-FE Engine
GarrettSocling Offline


Registered: 10/10/04
Posts: 163
Loc: Jersey Shore, PA
Thanks for the post, I had read that as well and had begun to fret [Cheers!]

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#130475 - 04/20/05 07:01 AM Re: Toyota 1ZZ-FE Engine
1911 Offline


Registered: 03/19/05
Posts: 165
Loc: Texas
I thank all of you for your excellent replies and especially the good links. Thanks!!!!

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#130476 - 04/24/05 11:04 PM Re: Toyota 1ZZ-FE Engine
Last_Z Offline


Registered: 10/21/02
Posts: 2790
Loc: San Antonio, TX
Guys,

Can you tell me where the PCV Valve is on my 03 Corolla? And what the heck is VSV?

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#130477 - 04/25/05 01:05 AM Re: Toyota 1ZZ-FE Engine
427Z06 Offline


Registered: 12/06/03
Posts: 7409
Loc: Austin, TX
quote:
Originally posted by Last_Z:
And what the heck is VSV?

IIRC, it's Vacuum Switching Valve.

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#130478 - 04/25/05 03:57 AM Re: Toyota 1ZZ-FE Engine
Last_Z Offline


Registered: 10/21/02
Posts: 2790
Loc: San Antonio, TX
quote:
Originally posted by 427Z06:
quote:
Originally posted by Last_Z:
And what the heck is VSV?

IIRC, it's Vacuum Switching Valve.
What about the PCV? ....or is the PCV now called VSV?

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