I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
about the introduction of Mobile 1 Extended Performance Synthetic. What I
found disturbing was that it does not meet API ILSAC GF-4 Certification
while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
specs. At any rate can you tell me the reason for this?

I am considering Castrol Syntec a try for my next change which does meet
the GF-4 specs.

Or does it not really make that much difference?

2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/ the
performance of Mobile 1. The manual calls for 10W30 oil.

Thank you,
Campbell C Freeman
Columbia, SC

 

In the words of Jeff Strickland... "snake oil" & extended performance "snake
oil".

IMO, if you change the oil and filter regularly, the oil you use makes no
difference.

(let the flames begin)

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Campbell C Freeman" wrote in message ...
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC
>
>

 

In the words of Jeff Strickland... "snake oil" & extended performance "snake
oil".

IMO, if you change the oil and filter regularly, the oil you use makes no
difference.

(let the flames begin)

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Campbell C Freeman" wrote in message ...
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC
>
>

 

In the words of Jeff Strickland... "snake oil" & extended performance "snake
oil".

IMO, if you change the oil and filter regularly, the oil you use makes no
difference.

(let the flames begin)

--
JimG
80' CJ-7 258 CID, HEI
4.56 Gears, Lock-Right F&R
35" BFG MT on 15x10 Centerlines
D44 Rear, D30 Front. SOA
Dana 300 w/4:1 & Currie twin sticks
Warn X8000i w/ dual batteries

00' TJ Sport 4.0L, 5sp
4.56 Gears, TrueTrac rear
33" BFG AT on 15x8 Eagle Alloys
D35 Rear, D30 Front. 3" Suspension Lift

"Campbell C Freeman" wrote in message ...
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC
>
>

 

and anyway... what do you mean "I have been pleased with the performance of
Mobile 1"? Do you have the used oil tested after removal? Does it make the
Jeep run better? Or what?

JimG

"Campbell C Freeman" wrote in message ...
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>

 

and anyway... what do you mean "I have been pleased with the performance of
Mobile 1"? Do you have the used oil tested after removal? Does it make the
Jeep run better? Or what?

JimG

"Campbell C Freeman" wrote in message ...
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>

 

and anyway... what do you mean "I have been pleased with the performance of
Mobile 1"? Do you have the used oil tested after removal? Does it make the
Jeep run better? Or what?

JimG

"Campbell C Freeman" wrote in message ...
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/
the
> performance of Mobile 1. The manual calls for 10W30 oil.
>

 

Please let us know where you live and the color of your Jeep so we know
which one to avoid when it comes up for sale....

Nothing kills an engine faster than someone who thinks their oil is
invincible.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Campbell C Freeman wrote:
>
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/ the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC

 

Please let us know where you live and the color of your Jeep so we know
which one to avoid when it comes up for sale....

Nothing kills an engine faster than someone who thinks their oil is
invincible.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Campbell C Freeman wrote:
>
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/ the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC

 

Please let us know where you live and the color of your Jeep so we know
which one to avoid when it comes up for sale....

Nothing kills an engine faster than someone who thinks their oil is
invincible.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Campbell C Freeman wrote:
>
> I have been using Mobile 1 Synthetic Oil for years & was pleased to hear
> about the introduction of Mobile 1 Extended Performance Synthetic. What I
> found disturbing was that it does not meet API ILSAC GF-4 Certification
> while Castrol Syntec does. I believe Mobile 1 SuperSyn does meet these
> specs. At any rate can you tell me the reason for this?
>
> I am considering Castrol Syntec a try for my next change which does meet
> the GF-4 specs.
>
> Or does it not really make that much difference?
>
> 2001 Jeep Wrangler Sport 4L 6 cyl w/ 23K miles & I have been pleased w/ the
> performance of Mobile 1. The manual calls for 10W30 oil.
>
> Thank you,
> Campbell C Freeman
> Columbia, SC