5W-30 vs 10w-30 oil
jimp...@earthlink.net
I live in a hot climate Florida,manual says to use 5w-30 in 96
Taurus-any opinions? I use Mobil-1 synthetic oil.
thanks, Jim
chita
Do what the manual says unless and until someone comes along who's willing
and able to pick up the tab if something goes wrong and following the
manual becomes a legal issue. Your car's too new to risk stepping out past
Ford's instructions, IMHO.
jimp...@earthlink.net wrote in article
<33af42a0...@news.earthlink.net>...
Craig Keener
jimp...@earthlink.net wrote:
>
> I live in a hot climate Florida,manual says to use 5w-30 in 96
> Taurus-any opinions? I use Mobil-1 synthetic oil.
> thanks, Jim
I'd go with the 10w-30 instead. The automakers always specify
the lightest possible weight an engine can tolerate to meet their fuel
economy standards (usually 5w-30), but in warmer climates you're
definitly better off using 10w-30. You'll see no difference in your fuel
economy or startup lubrication over the 5-30 oil at such temps, and
10w-30 makes a better oil because it contain less polymers and more
actual lubricant. This lower viscosity spread also means it's less
likely to leave sludge or varnish deposits behind.
Cheers,
- Craig
Ian Boswell
On Tue, 24 Jun 1997 03:47:43 GMT, jimp...@earthlink.net wrote:
>I live in a hot climate Florida,manual says to use 5w-30 in 96
>Taurus-any opinions? I use Mobil-1 synthetic oil.
>thanks, Jim
Strange....
In Europe Mobil 1 was 5/50w until about 12 months ago and is now
formulated as 0/40w.
In both cases the oil has been adopted by the mainstream performance
maufactureres e.g. Porsche, Ferrari etc....
Summary:- at US speeds 5/30w should be just fine....!!!!
Ian
John Weiss
What you're using is just fine!
On 6/23/97 8:47PM, in message <33af42a0...@news.earthlink.net>,
jimp...@earthlink.net wrote:
I live in a hot climate Florida,manual says to use 5w-30 in 96
Taurus-any opinions? I use Mobil-1 synthetic oil.
thanks, Jim
--
John Weiss
Seattle, WA
Mike Walsh
If you drive long distances in hot weather you should use 20w50. After
about 20 miles in hot weather 5w30 has about the same viscosity as water.
Mike Walsh
Palm Beach Gardens, Florida, USA
mike...@pb.seflin.org
Saab85900
Mike Walsh wrote:
>>>f you drive long distances in hot weather you should use 20w50. After
about 20 miles in hot weather 5w30 has about the same viscosity as
water.<<<
That is ridiculous, unless you are getting some unbranded low quality
engine oil.
At operating temperature, an xW-30 will be a 30.
No American or Japanese car on the market today recommends use of an
xW-50, because you will not get as good performance. The engine
clearances are designed for an xW-30, and an xW-50 will give more internal
drag.
Synthetic oil will hold spec much longer in high-temperature, heavy use
situations.
Dick in Falls Church, VA
Using and selling AMSOIL (First in Synthetics) over 20 years
BELJAN E
In <19970626025...@ladder01.news.aol.com> saab...@aol.com
carried over to the summer, but it seemed to always stay thin, so I
just drained it out, it could be low quality oil. Synthetics hold
viscosity better, they are better over the temp range.
Olen J Bray
> > Mike Walsh wrote:
> >>>>f you drive long distances in hot weather you should use 20w50.
Don't you often wonder why some people refuse to follow the manufacturer's
recommendation? Are they smarter than the engineers who design the
vehicles?
If the manufacturer recommends 5W-30 engine oil, then use 5W-30. It's that
simple!
Mark
Just remember that the manufacturer is counting on your engine wearing
out within a certain length of time. Then he can sell you another
vehicle.
John Weiss
On 6/26/97 3:30PM, in message
<01bc8280$28c73560$4c65...@cheyenne.wolfenet.com>, "Olen J Bray"
<chey...@wolfenet.com> wrote:
> > Mike Walsh wrote:
> >>>>f you drive long distances in hot weather you should use 20w50.
Don't you often wonder why some people refuse to follow the manufacturer's
recommendation? Are they smarter than the engineers who design the
vehicles?
If the manufacturer recommends 5W-30 engine oil, then use 5W-30. It's that
simple!
It's not quite that simple...
Conventional oils that use viscosity extenders to get their multi-vis ratings
can lose their viscosity over a relatively short time. I remember the essence
of a report in a major magazine 10 or 15 years ago that indicated a 10W-30 oil
became effectively a 10 vis oil after 2,000 - 3,000 miles of high-temp driving
(e.g., city traffic). A 10W-40 or 20W-50 conventional may be within the mfgr's
recommendations longer than the 10W-30...
OTOH, a synthetic oil that uses a base stock that is inherently a 10W-30 and
does not need any viscosity extenders may give better protection for a much
longer time...
FRANK BOYER
>>>>f you drive long distances in hot weather you should use 20w50.
>about 20 miles in hot weather 5w30 has about the same viscosity as
>water.<<<
>
>That is ridiculous, unless you are getting some unbranded low quality
>engine oil.
Check Chart temp charts for ambient temp usage of oils show 5-30 ok to
60f. Rember that a 5-30 is a 5 weight oil with vi additives. It is not
a 30 weigth oil. Synthetics do have much better temp curvers.
Frank
Mark Mathys
In article <N.062697.212934.64@ruth>, jrw...@seanet.com (John Weiss) wrote:
> Don't you often wonder why some people refuse to follow the manufacturer's
> recommendation? Are they smarter than the engineers who design the
> vehicles?
>
> If the manufacturer recommends 5W-30 engine oil, then use 5W-30. It's that
> simple!
>
> It's not quite that simple...
Yes it is!
> Conventional oils that use viscosity extenders to get their multi-vis ratings
> can lose their viscosity over a relatively short time.
Not true! My lab runs kinematic viscosity tests of over 350 samples a day
and it is rare to see a decrease in viscosity unless there is a fuel
dilution problem. In the cases where the oil is thinner it rarely changes
by more than 2-3 centistokes, will may or may not result in a change in
SAE viscosity. In cases where the oil drain is extended or the change is
skipped the oil becomes very thick due to oxidation (and soot in diesels).
xW30 oils test in the 40 wt range and 40wt oils test in the 50-60 wt
range.
> I remember the essence of a report in a major magazine 10 or 15 years
ago that indicated a 10W-30 oil became effectively a 10 vis oil after
2,000 - 3,000 miles of high-temp driving (e.g., city traffic).
I can't comment on 10-15 year old oil but I can say that oil is changing
everyday. We run into many cases where our heavy equipment customers are
running 15W40 oil in gear compartments (a no-no) and for many years we
told them it sheared to a 15 wt oil (we were wrong.) Since we started
doing viscosity (we've done about 65,000 this last year) we see that it
only goes to a 30 wt., and this it will do in as little as 5 hours, but I
have never seen it go thinner than 30wt. Transmissions and gear
compartment shear oil and additives much more than engines.
>A 10W-40 or 20W-50 conventional may be within the mfgr's
> recommendations longer than the 10W-30...
50 wt oil is thicker than 90 gear lube! and doesn't flow very easily even
on nice warm days. It is appropriate for racing engine and air cooled
engines but I would not recommend it for everyday use unless you live in
an extremely high temp area.
> OTOH, a synthetic oil that uses a base stock that is inherently a 10W-30 and
> does not need any viscosity extenders may give better protection for a much
> longer time...
I agree with this, but not necessarily because of viscosity.
Mark Mathys
Tony Mammone Jr
jimp...@earthlink.net wrote:
>I live in a hot climate Florida,manual says to use 5w-30 in 96
>Taurus-any opinions? I use Mobil-1 synthetic oil.
>thanks, Jim
Use what the owner's manual says. Why is it that people like to play
around with their car's waranty?