Increase oil "Weight" in old cars?

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Old 10 Feb 2005, 12:57 pm   #1 (permalink)
timbirr@mailcity.com
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Default Increase oil "Weight" in old cars?

Aye, Phillip touched on a point in the "camry Oil change mess" thread
that I would like to chase down.

Is it advised to go to thicker oil as a car ages.

I have an '87 Corolla. It uses about a quart of oil every three months.
Several little "seeps" here and there that my mechanic says are not
worth spending money on.

I have religiously changed the oil and filter every 3,000 miles
following the break-in period with the recommended 10W-40 oil. Good oil
and good filters.

Now, with 230K on the car and a "noisy" engine, would I be advised to
shift to another oil. I'm in the Pacific Northwest where we will have
an occassional 28-degree low, but for the most part the winter driving
temps are mid 30s to mid 50s and in the summer it ranges from lows of
55 to the rare 102.

Mostly local, low speed, country driving.

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Old 10 Feb 2005, 05:08 pm   #2 (permalink)
Ken Peterson
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Default Re: Increase oil "Weight" in old cars?

On 10 Feb 2005 10:57:48 -0800, timbirr@mailcity.com wrote:

Have you tried the "high mileage" type of motor oils? I found those
to be quite forgiving to a Camry with 100K. I have since converted to
Mobil1 Synthetic and am very happy so far with the cold weather
starts. (Of course, my engine has 103K on it vs. your 230K)

Have you poked around over here at the Bobistheoilguy Forum:

http://theoildrop.server101.com/cgi/ultimatebb.cgi

There's a wealth of info in the various forums and many helpful
people.

Congrats by the way for keeping the beastie alive for 230K worth!

>Aye, Phillip touched on a point in the "camry Oil change mess" thread
>that I would like to chase down.
>
>Is it advised to go to thicker oil as a car ages.
>
>I have an '87 Corolla. It uses about a quart of oil every three months.
>Several little "seeps" here and there that my mechanic says are not
>worth spending money on.
>
>I have religiously changed the oil and filter every 3,000 miles
>following the break-in period with the recommended 10W-40 oil. Good oil
>and good filters.
>
>Now, with 230K on the car and a "noisy" engine, would I be advised to
>shift to another oil. I'm in the Pacific Northwest where we will have
>an occassional 28-degree low, but for the most part the winter driving
>temps are mid 30s to mid 50s and in the summer it ranges from lows of
>55 to the rare 102.
>
>Mostly local, low speed, country driving.


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Old 10 Feb 2005, 05:23 pm   #3 (permalink)
Philip
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Default Re: Increase oil "Weight" in old cars?

timbirr@mailcity.com wrote:
> Aye, Phillip touched on a point in the "camry Oil change mess" thread
> that I would like to chase down.
>
> Is it advised to go to thicker oil as a car ages.
>
> I have an '87 Corolla. It uses about a quart of oil every three
> months. Several little "seeps" here and there that my mechanic says
> are not worth spending money on.
>
> I have religiously changed the oil and filter every 3,000 miles
> following the break-in period with the recommended 10W-40 oil. Good
> oil and good filters.
>
> Now, with 230K on the car and a "noisy" engine, would I be advised to
> shift to another oil. I'm in the Pacific Northwest where we will have
> an occassional 28-degree low, but for the most part the winter driving
> temps are mid 30s to mid 50s and in the summer it ranges from lows of
> 55 to the rare 102.
>
> Mostly local, low speed, country driving.


I would NOT choose a heavier oil in an effort to slow an oil leak.

For your engine, when the historic oil consumption rate has deteriorated by
50% (my own rule of thumb), then .... assuming the rubber valve guide seals
are NOT the reason for the consumption increase, I would increase the oil
weight. Remember, oil clearances and temperature are the primarily
determinants for the oil weight you choose.

For comparison, my last car was a '90 Geo Prizm that I bought new. It had
the 4AFE (dohc FI) engine. Always ran Mobil1 10w-30 in it. After break-in,
the car would pass about 1/2 a quart between oil changes (4,000 miles).
When I sold the car with 285k miles on it, oil consumption was about 3,000
miles per quart. I used 15w-50 only during the summer months after the car
passed 200k miles because the southern CA and AZ deserts have temperatures
for about 3-4 months over 100 degrees (110-115 at times), the car had A/C,
and was on the highway quite a bit. Gearing had the engine spinning along
at 3500 rpm / 70 mph.

--

- Philip



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Old 10 Feb 2005, 06:49 pm   #4 (permalink)
timbirr@mailcity.com
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Default Re: Increase oil "Weight" in old cars?

Thanks, Ken and Philip for the replies.

I have thought about changing over to the high mile oil. But not really
sure that they would be of benefit. My mechanic is of the "ain't
broke, don't change it" philopsophy -- and I appreciate that in him!

Philip, I'm not trying to stop the leaks (I'd use oatmeal for that --
just joking), but I am trying to be kind to the car as it ages, and
maybe coax an extra 10-30K out of it. And if a different oil would
help, I am interested.

This one has the 4LC engine in it.

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Old 10 Feb 2005, 07:26 pm   #5 (permalink)
Ken Peterson
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Default Re: Increase oil "Weight" in old cars?

On 10 Feb 2005 16:49:18 -0800, timbirr@mailcity.com wrote:

My Camry was thirsty for regular oil and would use about 3/4 of a
quart between oil changes (I change oil at 2K), and would use more on
highway driving. Switching over to Mobil synthetic blend for
high-mileage cars (over 75K) took care of the oil consumption issue
and made the engine quieter. I had been running that type of oil for
the past year until we had some really cold weather here on the east
coast and I went to 100% synthetic Mobil 1.

It wouldn't hurt you to try a crankcase full of the higher mileage
type of motor oil - if it quiets down the insides of your 4-banger, it
might make you happy.

It may even address your "seeping" issue.

>Thanks, Ken and Philip for the replies.
>
>I have thought about changing over to the high mile oil. But not really
>sure that they would be of benefit. My mechanic is of the "ain't
>broke, don't change it" philopsophy -- and I appreciate that in him!
>
>Philip, I'm not trying to stop the leaks (I'd use oatmeal for that --
>just joking), but I am trying to be kind to the car as it ages, and
>maybe coax an extra 10-30K out of it. And if a different oil would
>help, I am interested.
>
>This one has the 4LC engine in it.


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Old 10 Feb 2005, 08:32 pm   #6 (permalink)
MUADIBŪ
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Default Re: Increase oil "Weight" in old cars?

I'll agree with Ken on this issue. High Mileage oil, not higher
viscosity oil. Your car is old, the seals are old. If you change the
oil viscosity to higher, you may cause harm, where the other route
should be safe.

Your environment does not call for a higher viscosity oil. I would
recommend , even highly, Against it.




Remove "YOURPANTIES" to reply

MUADIBŪ

http://www.angelfire.com/retro/sster...IN%20PAGE.html

one small step for man,.....
One giant leap for attorneys.
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Old 11 Feb 2005, 12:17 am   #7 (permalink)
Jason James
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Default Re: Increase oil "Weight" in old cars?


<timbirr@mailcity.com> wrote in message
news:1108061868.830332.221030@c13g2000cwb.googlegr oups.com...
> Aye, Phillip touched on a point in the "camry Oil change mess" thread
> that I would like to chase down.
>
> Is it advised to go to thicker oil as a car ages.
>
> I have an '87 Corolla. It uses about a quart of oil every three months.
> Several little "seeps" here and there that my mechanic says are not
> worth spending money on.
>
> I have religiously changed the oil and filter every 3,000 miles
> following the break-in period with the recommended 10W-40 oil. Good oil
> and good filters.
>
> Now, with 230K on the car and a "noisy" engine, would I be advised to
> shift to another oil. I'm in the Pacific Northwest where we will have
> an occassional 28-degree low, but for the most part the winter driving
> temps are mid 30s to mid 50s and in the summer it ranges from lows of
> 55 to the rare 102.
>
> Mostly local, low speed, country driving.


If the engine is not sending the oil black in the first 2000 miles or month
of driving (burning oil, poor sealing rings) and there is no oil-pressure
problems which translate to engine bearing noise,..I'd stay with the
recommended oil-grade as per the driver's h/book.

In the event an engine does need a heavier oil, one grade shift only is what
I would do in these engines eg 15/40 to 20/50 or 10/30 to 15/40. Any further
and its possible more wear may occur due lack of oil- flow at critical
clearances which have not increased in other areas of the engine..

Jason



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Old 11 Feb 2005, 12:58 am   #8 (permalink)
Mark A
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Default Re: Increase oil "Weight" in old cars?

> > Aye, Phillip touched on a point in the "camry Oil change mess" thread
> > that I would like to chase down.
> >
> > Is it advised to go to thicker oil as a car ages.
> >
> > I have an '87 Corolla. It uses about a quart of oil every three months.
> > Several little "seeps" here and there that my mechanic says are not
> > worth spending money on.
> >
> > I have religiously changed the oil and filter every 3,000 miles
> > following the break-in period with the recommended 10W-40 oil. Good oil
> > and good filters.
> >
> > Now, with 230K on the car and a "noisy" engine, would I be advised to
> > shift to another oil. I'm in the Pacific Northwest where we will have
> > an occassional 28-degree low, but for the most part the winter driving
> > temps are mid 30s to mid 50s and in the summer it ranges from lows of
> > 55 to the rare 102.
> >
> > Mostly local, low speed, country driving.

>

There are several oils now available for high mileage cars that you should
try. Available in any auto parts store or discount store.


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Old 11 Feb 2005, 01:21 am   #9 (permalink)
Viperkiller
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Default Re: Increase oil "Weight" in old cars?

On Thu, 10 Feb 2005 18:08:48 -0500, Ken Peterson <zebra @
optonline.net> wrote:

>On 10 Feb 2005 10:57:48 -0800, timbirr@mailcity.com wrote:
>
>Have you tried the "high mileage" type of motor oils? I found those
>to be quite forgiving to a Camry with 100K. I have since converted to
>Mobil1 Synthetic and am very happy so far with the cold weather
>starts. (Of course, my engine has 103K on it vs. your 230K)
>
>Have you poked around over here at the Bobistheoilguy Forum:
>
>http://theoildrop.server101.com/cgi/ultimatebb.cgi
>
>There's a wealth of info in the various forums and many helpful
>people.
>
>Congrats by the way for keeping the beastie alive for 230K worth!


Keep in mind though that synthetic oil has smaller molecules. If the
engine is already leaking oil, the use of synthetic will exacerbate
the situation.
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Old 11 Feb 2005, 01:36 am   #10 (permalink)
Philip
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Default Re: Increase oil "Weight" in old cars?

My friend, your agreement is misplaced. Do you have some idea what
constitutes "High Mileage" oil? Go on ... give it a go. ;-)
--

- Philip

MUADIBŪ wrote:
> I'll agree with Ken on this issue. High Mileage oil, not higher
> viscosity oil. Your car is old, the seals are old. If you change the
> oil viscosity to higher, you may cause harm, where the other route
> should be safe.
>
> Your environment does not call for a higher viscosity oil. I would
> recommend , even highly, Against it.
>
>
>
>
> Remove "YOURPANTIES" to reply
>
> MUADIBŪ
>




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