Dirty engine - Wrong type of oil?

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Old 31 Jan 2009, 01:02 pm   #1 (permalink)
John P.
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Default Dirty engine - Wrong type of oil?

On a '01 V6 Camry with about 150k miles the engine started to look as if
it's leaking on the outside, from the top fittings (there is absolutely no
drip underneath the vehicle). Almost on every place where something is
connected, looks like oil or something has leaked from the inside the engine
collected the dust resulting into some sort of dirty deposit. It's not
excessive as in you can't see the engine, but it something it hasn't been
there before.
I have no idea what causes this and I'll appreciate any ideas on how to
prevent this from happening.

As for the oil, I've always used Mobil 1 5W-30 with changes every 5000
miles, never missed one. Last change I switched to 10W-30, since I've heard
that the older the engine, the higher the number before the W should be, yet
it looks like the "leak" is more pronounced, but probably just my
immagination.

Thanks in advance,
John


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Old 31 Jan 2009, 04:36 pm   #2 (permalink)
mrdarrett@gmail.com
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Default Re: Dirty engine - Wrong type of oil?

On Jan 31, 11:02*am, "John P." <noem...@all.com> wrote:
> On a '01 V6 Camry with about 150k miles the engine started to look as if
> it's leaking on the outside, from the top fittings (there is absolutely no
> drip underneath the vehicle). Almost on every place where something is
> connected, looks like oil or something has leaked from the inside the engine
> collected the dust resulting into some sort of dirty deposit. It's not
> excessive as in you can't see the engine, but it something it hasn't been
> there before.
> I have no idea what causes this and I'll appreciate any ideas on how to
> prevent this from happening.
>
> As for the oil, I've always used Mobil 1 5W-30 with changes every 5000
> miles, never missed one. Last change I switched to 10W-30, since I've heard
> that the older the engine, the higher the number before the W should be, yet
> it looks like the "leak" is more pronounced, but probably just my
> immagination.
>
> Thanks in advance,
> John



Try tightening the valve cover nuts and see if that helps. They're
the huge 30 mm nuts where the spark plug wires go.

I did that on my wife's '99, 91k mile Camry, and a mystery oil seep
seemed to go away. (Valve cover nuts were slightly loose.)

Autozone sells individual socket wrench sizes, I don't remember where
I bought my 30 mm socket wrench. I remember I was able to buy just
the one (about $6), and not have to buy a set. It's a 1/2" socket, so
you might need a 1/2" to 3/8" socket adapter... or not, if you have a
1/2" torque wrench.

Otherwise it's probably time to change some of the engine seals...

Michael
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Old 31 Jan 2009, 07:14 pm   #3 (permalink)
johngdole@hotmail.com
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Default Re: Dirty engine - Wrong type of oil?

Front the front bank (radiator side) or the rear bank (firewall side)?
Or from under the plastic cover on top of the engine?

Mobil-1 5W-30 or even the 10W-30 should be fine. I've suggest people
use the thickest approved grade for the temperature range they operate
in. For most that's 10W-30. BTW, Mobil-1 are great synthetic oils.

Look at the valve cover gaskets. These are likely the culprit. The
covers have stoppers, so you cannot just tighten the 10mm bolts. Most
likely you'll need new gaskets, applied dry. Fel-Pro has a kit with
spark plug tube seals, check www.rockauto.com for prices. You need
small dabs of RTV (such as Permatex Ultra Grey or even just the
regular Blue) at the seams of the semicircular plugs on the heads so
oil doesn't leak from there.

Also check your PCV valve. If it's not working the engine crankcase
can build up pressure (well, at least not enough vacuum for the PCV
system to properly operate). change the grommet as well. Be care the
now brittle grommet can disintegrate and fall into the head. Both are
probably ~$8-10 at the dealer.

I don't know how mechanically inclined you are, but with the covers
off, might as well check the valve clearances. Check the free repair
guide on www.autozone.com.


On Jan 31, 11:02*am, "John P." <noem...@all.com> wrote:
> On a '01 V6 Camry with about 150k miles the engine started to look as if
> it's leaking on the outside, from the top fittings (there is absolutely no
> drip underneath the vehicle). Almost on every place where something is
> connected, looks like oil or something has leaked from the inside the engine
> collected the dust resulting into some sort of dirty deposit. It's not
> excessive as in you can't see the engine, but it something it hasn't been
> there before.
> I have no idea what causes this and I'll appreciate any ideas on how to
> prevent this from happening.
>
> As for the oil, I've always used Mobil 1 5W-30 with changes every 5000
> miles, never missed one. Last change I switched to 10W-30, since I've heard
> that the older the engine, the higher the number before the W should be, yet
> it looks like the "leak" is more pronounced, but probably just my
> immagination.
>
> Thanks in advance,
> John


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Old 01 Feb 2009, 12:43 am   #4 (permalink)
ransley
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Default Re: Dirty engine - Wrong type of oil?

On Jan 31, 1:02*pm, "John P." <noem...@all.com> wrote:
> On a '01 V6 Camry with about 150k miles the engine started to look as if
> it's leaking on the outside, from the top fittings (there is absolutely no
> drip underneath the vehicle). Almost on every place where something is
> connected, looks like oil or something has leaked from the inside the engine
> collected the dust resulting into some sort of dirty deposit. It's not
> excessive as in you can't see the engine, but it something it hasn't been
> there before.
> I have no idea what causes this and I'll appreciate any ideas on how to
> prevent this from happening.
>
> As for the oil, I've always used Mobil 1 5W-30 with changes every 5000
> miles, never missed one. Last change I switched to 10W-30, since I've heard
> that the older the engine, the higher the number before the W should be, yet
> it looks like the "leak" is more pronounced, but probably just my
> immagination.
>
> Thanks in advance,
> John


Read specs at M1 5-30 is better at low temps and better. Wash the
motor.
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Old 01 Feb 2009, 08:52 pm   #5 (permalink)
John P.
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Default Re: Dirty engine - Wrong type of oil?

Thanks, great tips!
It's from the front, mostly where the engine is sealed and underneath it.
Looks like some gunk or muck but not very thick. I haven't seen how another
engine looks like at 150k miles, but probably I'll take the other person'
suggestions and just wash it.

How about Mobil 1, 0W-40? Should it apply to this engine situation or is it
a good idea to use on a 150k engine?
John

<johngdole@hotmail.com> wrote in message
news:6de752e5-bb75-438c-91a8-8ce79413a8f4@v39g2000pro.googlegroups.com...
Front the front bank (radiator side) or the rear bank (firewall side)?
Or from under the plastic cover on top of the engine?

Mobil-1 5W-30 or even the 10W-30 should be fine. I've suggest people
use the thickest approved grade for the temperature range they operate
in. For most that's 10W-30. BTW, Mobil-1 are great synthetic oils.

Look at the valve cover gaskets. These are likely the culprit. The
covers have stoppers, so you cannot just tighten the 10mm bolts. Most
likely you'll need new gaskets, applied dry. Fel-Pro has a kit with
spark plug tube seals, check www.rockauto.com for prices. You need
small dabs of RTV (such as Permatex Ultra Grey or even just the
regular Blue) at the seams of the semicircular plugs on the heads so
oil doesn't leak from there.

Also check your PCV valve. If it's not working the engine crankcase
can build up pressure (well, at least not enough vacuum for the PCV
system to properly operate). change the grommet as well. Be care the
now brittle grommet can disintegrate and fall into the head. Both are
probably ~$8-10 at the dealer.

I don't know how mechanically inclined you are, but with the covers
off, might as well check the valve clearances. Check the free repair
guide on www.autozone.com.


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Old 01 Feb 2009, 09:08 pm   #6 (permalink)
Mark A
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Default Re: Dirty engine - Wrong type of oil?

"John P." <noemail@all.com> wrote in message
news:Mdthl.21861$ZP4.3579@nlpi067.nbdc.sbc.com...
> Thanks, great tips!
> It's from the front, mostly where the engine is sealed and underneath it.
> Looks like some gunk or muck but not very thick. I haven't seen how
> another engine looks like at 150k miles, but probably I'll take the other
> person' suggestions and just wash it.
>
> How about Mobil 1, 0W-40? Should it apply to this engine situation or is
> it a good idea to use on a 150k engine?
> John


I would go back to Mobil 1 5W-30. While it is sometimes a good idea to
increase viscosity on an engine with 150K miles, that would not hold true if
you have been using Mobil 1 since engine wear is negligible with a full
synthetic oil.

I is possible that the extra viscosity caused some leaks in already fragile
seals. Also, make sure you don't overfill the crankcase.


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Old 02 Feb 2009, 09:39 pm   #7 (permalink)
johngdole@hotmail.com
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Default Re: Dirty engine - Wrong type of oil?

You have 150K miles, so some rubber parts are going to harden. Most
are NOT high grade Viton rubber. The likely ones are rear main seal
and valve exhaust stem seals. Even the intake ones are cheaper rubber,
that's why Toyotas are more likely to puff blue smoke on cold
startups.

The Mobil-1 0W-40 is an excellent oil that meets the demanding BMW
LL-01, VW 502/505, and MB 209 specifications. However, the 0W would be
of concern because it's too thin at lower temperatures for Toyota
engines. In fact, if the prices are the same, you can pick up BMW
5W-30 too. It has stronger film strength than Mobil-1 5W-30 from what
I hear. But using it won't turn your Camry into a BMW.

I think Mobil-1 10W-30 should be fine (and Toyota approved viscosity
grade). If needed, try the High Mileage version of Mobil-1. But I
think yours is a simple case of "old rubber gaskets need replacing."
And much less about 5W/10W difference.

Mobil-1 High Mileage:
http://www.mobiloil.com/USA-English/...ge_10W-30.aspx



On Feb 1, 6:52*pm, "John P." <noem...@all.com> wrote:
> Thanks, great tips!
> It's from the front, mostly where the engine is sealed and underneath it.
> Looks like some gunk or muck but not very thick. I haven't seen how another
> engine looks like at 150k miles, but probably I'll take the other person'
> suggestions and just wash it.
>
> How about Mobil 1, 0W-40? Should it apply to this engine situation or is it
> a good idea to use on a 150k engine?
> John

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Old 08 Feb 2009, 07:48 pm   #8 (permalink)
Art
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Default Re: Dirty engine - Wrong type of oil?

On old camry's this was caused by distributor. Don't know how current
design is but in the old days as distributor o-ring wore out it spun oil in
a fog over engine. Check underneath top of hood. It would be covered with
oil too from the distributor.


"John P." <noemail@all.com> wrote in message
news:0f1hl.19304$Ws1.2542@nlpi064.nbdc.sbc.com...
> On a '01 V6 Camry with about 150k miles the engine started to look as if
> it's leaking on the outside, from the top fittings (there is absolutely no
> drip underneath the vehicle). Almost on every place where something is
> connected, looks like oil or something has leaked from the inside the
> engine collected the dust resulting into some sort of dirty deposit. It's
> not excessive as in you can't see the engine, but it something it hasn't
> been there before.
> I have no idea what causes this and I'll appreciate any ideas on how to
> prevent this from happening.
>
> As for the oil, I've always used Mobil 1 5W-30 with changes every 5000
> miles, never missed one. Last change I switched to 10W-30, since I've
> heard that the older the engine, the higher the number before the W should
> be, yet it looks like the "leak" is more pronounced, but probably just my
> immagination.
>
> Thanks in advance,
> John
>



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