Oil
 

Chaps,
Forgive me if I tread once again on the well worn territory of oil
grades. I believe the consensus of group was that oils with a smaller range
like 10w30 perform better than those with a larger range (e.g. 10w40 was not
recommended). I think the reason given was that polymers were added to
alter the viscosity, and the larger the compromise, the worse the
performance.

At the same time, Mobil One is highly recommended, and indeed is the stuff
that the dealer would squirt in, were I incapable of unscrewing a filter, a
cap and a drain plug.

Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
Thoughts ?

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

Re: Oil
 

Use 5w30.

Dave Milne wrote:

> Chaps,
> Forgive me if I tread once again on the well worn territory of oil
> grades. I believe the consensus of group was that oils with a smaller range
> like 10w30 perform better than those with a larger range (e.g. 10w40 was not
> recommended). I think the reason given was that polymers were added to
> alter the viscosity, and the larger the compromise, the worse the
> performance.
>
> At the same time, Mobil One is highly recommended, and indeed is the stuff
> that the dealer would squirt in, were I incapable of unscrewing a filter, a
> cap and a drain plug.
>
> Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> Thoughts ?
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ
>
>

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________

Re: Oil
 

Use 5w30.

Dave Milne wrote:

> Chaps,
> Forgive me if I tread once again on the well worn territory of oil
> grades. I believe the consensus of group was that oils with a smaller range
> like 10w30 perform better than those with a larger range (e.g. 10w40 was not
> recommended). I think the reason given was that polymers were added to
> alter the viscosity, and the larger the compromise, the worse the
> performance.
>
> At the same time, Mobil One is highly recommended, and indeed is the stuff
> that the dealer would squirt in, were I incapable of unscrewing a filter, a
> cap and a drain plug.
>
> Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> Thoughts ?
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ
>
>

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________

Re: Oil
 

Use 5w30.

Dave Milne wrote:

> Chaps,
> Forgive me if I tread once again on the well worn territory of oil
> grades. I believe the consensus of group was that oils with a smaller range
> like 10w30 perform better than those with a larger range (e.g. 10w40 was not
> recommended). I think the reason given was that polymers were added to
> alter the viscosity, and the larger the compromise, the worse the
> performance.
>
> At the same time, Mobil One is highly recommended, and indeed is the stuff
> that the dealer would squirt in, were I incapable of unscrewing a filter, a
> cap and a drain plug.
>
> Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> Thoughts ?
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ
>
>

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________

Re: Oil
 

Use 5w30.

Dave Milne wrote:

> Chaps,
> Forgive me if I tread once again on the well worn territory of oil
> grades. I believe the consensus of group was that oils with a smaller range
> like 10w30 perform better than those with a larger range (e.g. 10w40 was not
> recommended). I think the reason given was that polymers were added to
> alter the viscosity, and the larger the compromise, the worse the
> performance.
>
> At the same time, Mobil One is highly recommended, and indeed is the stuff
> that the dealer would squirt in, were I incapable of unscrewing a filter, a
> cap and a drain plug.
>
> Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> Thoughts ?
>
> Dave Milne, Scotland
> '91 Grand Wagoneer, '99 TJ
>
>

--
__________________________________________________ _________
tw

03 TJ Rubicon - Rubicon Express 4.5"
01 XJ Sport

There is a very fine line between "hobby" and "mental illness."
-- Dave Barry

Pronunciation: 'jEp
Function: noun
Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80-inch wheelbase,
1/4-ton capacity, and four-wheel drive used by the U.S. army in
World War II.

(Please remove the OBVIOUS to reply by email)
__________________________________________________ _________

Re: Oil
 

I use Mobil 1 5W30 in my '02 TJ, I have since 800 miles.

CDG

"twaldron" <thomas@OBVIOUSrubicons.com> wrote in message
news:lVzkc.5367$NV4.1309@newssvr23.news.prodigy.co m...
> Use 5w30.
>
> Dave Milne wrote:
>
> > Chaps,
> > Forgive me if I tread once again on the well worn territory of
oil
> > grades. I believe the consensus of group was that oils with a smaller
range
> > like 10w30 perform better than those with a larger range (e.g. 10w40 was
not
> > recommended). I think the reason given was that polymers were added to
> > alter the viscosity, and the larger the compromise, the worse the
> > performance.
> >
> > At the same time, Mobil One is highly recommended, and indeed is the
stuff
> > that the dealer would squirt in, were I incapable of unscrewing a
filter, a
> > cap and a drain plug.
> >
> > Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> > Thoughts ?
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> >
>
> --
> __________________________________________________ _________
> tw
>
> 03 TJ Rubicon - Rubicon Express 4.5"
> 01 XJ Sport
>
> There is a very fine line between "hobby" and "mental illness."
> -- Dave Barry
>
> Pronunciation: 'jEp
> Function: noun
> Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80-inch wheelbase,
> 1/4-ton capacity, and four-wheel drive used by the U.S. army in
> World War II.
>
> (Please remove the OBVIOUS to reply by email)
> __________________________________________________ _________
>

Re: Oil
 

I use Mobil 1 5W30 in my '02 TJ, I have since 800 miles.

CDG

"twaldron" <thomas@OBVIOUSrubicons.com> wrote in message
news:lVzkc.5367$NV4.1309@newssvr23.news.prodigy.co m...
> Use 5w30.
>
> Dave Milne wrote:
>
> > Chaps,
> > Forgive me if I tread once again on the well worn territory of
oil
> > grades. I believe the consensus of group was that oils with a smaller
range
> > like 10w30 perform better than those with a larger range (e.g. 10w40 was
not
> > recommended). I think the reason given was that polymers were added to
> > alter the viscosity, and the larger the compromise, the worse the
> > performance.
> >
> > At the same time, Mobil One is highly recommended, and indeed is the
stuff
> > that the dealer would squirt in, were I incapable of unscrewing a
filter, a
> > cap and a drain plug.
> >
> > Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> > Thoughts ?
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> >
>
> --
> __________________________________________________ _________
> tw
>
> 03 TJ Rubicon - Rubicon Express 4.5"
> 01 XJ Sport
>
> There is a very fine line between "hobby" and "mental illness."
> -- Dave Barry
>
> Pronunciation: 'jEp
> Function: noun
> Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80-inch wheelbase,
> 1/4-ton capacity, and four-wheel drive used by the U.S. army in
> World War II.
>
> (Please remove the OBVIOUS to reply by email)
> __________________________________________________ _________
>

Re: Oil
 

I use Mobil 1 5W30 in my '02 TJ, I have since 800 miles.

CDG

"twaldron" <thomas@OBVIOUSrubicons.com> wrote in message
news:lVzkc.5367$NV4.1309@newssvr23.news.prodigy.co m...
> Use 5w30.
>
> Dave Milne wrote:
>
> > Chaps,
> > Forgive me if I tread once again on the well worn territory of
oil
> > grades. I believe the consensus of group was that oils with a smaller
range
> > like 10w30 perform better than those with a larger range (e.g. 10w40 was
not
> > recommended). I think the reason given was that polymers were added to
> > alter the viscosity, and the larger the compromise, the worse the
> > performance.
> >
> > At the same time, Mobil One is highly recommended, and indeed is the
stuff
> > that the dealer would squirt in, were I incapable of unscrewing a
filter, a
> > cap and a drain plug.
> >
> > Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> > Thoughts ?
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> >
>
> --
> __________________________________________________ _________
> tw
>
> 03 TJ Rubicon - Rubicon Express 4.5"
> 01 XJ Sport
>
> There is a very fine line between "hobby" and "mental illness."
> -- Dave Barry
>
> Pronunciation: 'jEp
> Function: noun
> Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80-inch wheelbase,
> 1/4-ton capacity, and four-wheel drive used by the U.S. army in
> World War II.
>
> (Please remove the OBVIOUS to reply by email)
> __________________________________________________ _________
>

Re: Oil
 

I use Mobil 1 5W30 in my '02 TJ, I have since 800 miles.

CDG

"twaldron" <thomas@OBVIOUSrubicons.com> wrote in message
news:lVzkc.5367$NV4.1309@newssvr23.news.prodigy.co m...
> Use 5w30.
>
> Dave Milne wrote:
>
> > Chaps,
> > Forgive me if I tread once again on the well worn territory of
oil
> > grades. I believe the consensus of group was that oils with a smaller
range
> > like 10w30 perform better than those with a larger range (e.g. 10w40 was
not
> > recommended). I think the reason given was that polymers were added to
> > alter the viscosity, and the larger the compromise, the worse the
> > performance.
> >
> > At the same time, Mobil One is highly recommended, and indeed is the
stuff
> > that the dealer would squirt in, were I incapable of unscrewing a
filter, a
> > cap and a drain plug.
> >
> > Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> > Thoughts ?
> >
> > Dave Milne, Scotland
> > '91 Grand Wagoneer, '99 TJ
> >
> >
>
> --
> __________________________________________________ _________
> tw
>
> 03 TJ Rubicon - Rubicon Express 4.5"
> 01 XJ Sport
>
> There is a very fine line between "hobby" and "mental illness."
> -- Dave Barry
>
> Pronunciation: 'jEp
> Function: noun
> Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80-inch wheelbase,
> 1/4-ton capacity, and four-wheel drive used by the U.S. army in
> World War II.
>
> (Please remove the OBVIOUS to reply by email)
> __________________________________________________ _________
>

Re: Oil
 

Roughly 4/30/04 13:20, Dave Milne's monkeys randomly typed:

> Chaps,
> Forgive me if I tread once again on the well worn territory of oil
> grades. I believe the consensus of group was that oils with a smaller range
> like 10w30 perform better than those with a larger range (e.g. 10w40 was not
> recommended). I think the reason given was that polymers were added to
> alter the viscosity, and the larger the compromise, the worse the
> performance.
>
> At the same time, Mobil One is highly recommended, and indeed is the stuff
> that the dealer would squirt in, were I incapable of unscrewing a filter, a
> cap and a drain plug.
>
> Except ... over here Mobil One is 5 w 40 ; that is a big ------ !
> Thoughts ?

It is attemting to apply a rule of thumb to one type of oil chemistry
to an entirely different chemical formulation... The folklore for
dinosaur urine is that the extended viscosity range is gained by
adding a witches brew to a base stock derived from cracking crude oil.
And that the components of this witches brew break down due to both
time and load... lowering the effective viscosity range. Whereas the
Mobil One synthetic is made from a different type of base stock [which
may also come from dinosaur pee] of a different chemical composition
entirely that needs less brewing to obtain a wide viscosity range,
thus being a slightly less complicated witches brew so the different
components will decay at a fairly uniform rate, so the viscosity
stays stable over a longer service interval.

On this side of the pond, oil viscosity is only measured at two
temperature points... so at lower temps it may thicken quickly
[or may not] and at higher temps it may thin non-linearily [or
may not]...making viscosity range of limited usefulness in
describing much of real interest about the oil.

The synths tend to have better lube qualities at low temps and
at high temps...with lower overall friction that stays a bit more
constant over the service interval... and that alone may make it
worth considering.

I haven't noticed any odd results of cutting a 4.0 over to synth
over 2.5 years... oil consumption is extremely low and I would guess
a few percentage better oil mileage particularly on longer trips.
...and I still change it rather aggressively.

--
Evolution is merely survival of the minimally adequate