Motul 5W-40 Motor Oil DEAL
07-07-2012, 12:36 PM
#17
Race Director
Interesting info....curious on where you learned it. thanks!
It is a fine oil for your car's engine. Really, do you think Porsche would fill these engines from the factory with a crappy oil and then stand back and warranty the engine for 50K miles?
If an oil is no good, the engine will not need 50K miles to tell you... more like 500 miles, if that many miles.
Of course you can run any oil in your car's engine you want, but my advice is if you can't or don't want to run Mobil 1 0w-40 oil switch to another yet approved oil.
The Motul oil, at least some of the oils offered by Motul, are approved and thus as good as any other approved oil.
A word pr two of warning though.
IIRC Motul is a Group V oil, which means among other things it is an ester based oil.
My info is ester has a tendency to cause oil seals to swell. This has a couple of side affects. One it increases friction... do not laugh. In some models, GT2 at least, Porsche fits low tension seals for the last bit of HP, so the increase in friction is real.
Will you feel it?
Heck no.
But increased friction means the seal can wear faster. Will this seal then leak when it would not have otherwise leaked, or leak sooner?
No one can say.
If one ever switches away from an ester based oil the seals will shrink some and otherwise oil tight seals could begin to leak.
So my take is a switch to Motul (an ester based oil at any rate) is a one way path.
Sincerely,
Macster.
If an oil is no good, the engine will not need 50K miles to tell you... more like 500 miles, if that many miles.
Of course you can run any oil in your car's engine you want, but my advice is if you can't or don't want to run Mobil 1 0w-40 oil switch to another yet approved oil.
The Motul oil, at least some of the oils offered by Motul, are approved and thus as good as any other approved oil.
A word pr two of warning though.
IIRC Motul is a Group V oil, which means among other things it is an ester based oil.
My info is ester has a tendency to cause oil seals to swell. This has a couple of side affects. One it increases friction... do not laugh. In some models, GT2 at least, Porsche fits low tension seals for the last bit of HP, so the increase in friction is real.
Will you feel it?
Heck no.
But increased friction means the seal can wear faster. Will this seal then leak when it would not have otherwise leaked, or leak sooner?
No one can say.
If one ever switches away from an ester based oil the seals will shrink some and otherwise oil tight seals could begin to leak.
So my take is a switch to Motul (an ester based oil at any rate) is a one way path.
Sincerely,
Macster.
07-07-2012, 01:02 PM
#18
Three Wheelin'
Personally use the Castrol Edge with SPT Full Syntec 5-40W... formally know as Castrol Syntec. Porsche A40 approved.
Satisfied user... Florida weather and (3) track event per year. Advance Auto has the oil at $8.50 a quart.
Satisfied user... Florida weather and (3) track event per year. Advance Auto has the oil at $8.50 a quart.
07-09-2012, 11:21 AM
#20
PAO and leaks
A quote from Richard Widman's Selection of the right motor oil....
"Forget the myth that synthetics cause leaks. The formulations of decades ago were pure PAO (group IV) that had poor solvency and tended to shrink seals. All of today’s formulations have esters or other ingredients that make them totally compatible with the seals, and the better ones will actually reduce leaking after a couple thousand miles."
Much, much more can be found at the link below:
http://www.widman.biz/Corvair/English/Links/Oil.html
cvazquez:
Castrol 5W-40 shears down to 30 grade at about 6 thousand miles or so.
Stop by Renntech and search for posts by "JFP from PA". He covers it extensively and suggests to use Castrol 10W-40 instead with much better results.
"Forget the myth that synthetics cause leaks. The formulations of decades ago were pure PAO (group IV) that had poor solvency and tended to shrink seals. All of today’s formulations have esters or other ingredients that make them totally compatible with the seals, and the better ones will actually reduce leaking after a couple thousand miles."
Much, much more can be found at the link below:
http://www.widman.biz/Corvair/English/Links/Oil.html
cvazquez:
Castrol 5W-40 shears down to 30 grade at about 6 thousand miles or so.
Stop by Renntech and search for posts by "JFP from PA". He covers it extensively and suggests to use Castrol 10W-40 instead with much better results.
08-28-2012, 01:26 PM
#21
X-Cess UOA
Gents,
This is follow up to my previous post on Motul X-Cess.
Here is Motul X-Cess 5W-40 UOA from this summer.
Very comparable in many ways to last year's UOA on M1 TDT (older version with more Zn & P than current SM blend).
Again, gentle warmups, no short trips, full RPM range once oil temp @ ~190*F.
Next fill: Motul 300V 10W-40 (I frankly don't care how much it costs so long I can get similar wear numbers).
The numbers speak for themselves:
Enjoy.
=L=
This is follow up to my previous post on Motul X-Cess.
Here is Motul X-Cess 5W-40 UOA from this summer.
Very comparable in many ways to last year's UOA on M1 TDT (older version with more Zn & P than current SM blend).
Again, gentle warmups, no short trips, full RPM range once oil temp @ ~190*F.
Next fill: Motul 300V 10W-40 (I frankly don't care how much it costs so long I can get similar wear numbers).
The numbers speak for themselves:
Enjoy.
=L=
08-28-2012, 03:34 PM
#23
Correct,
Motul X-Cess has 6,800 kms on top and Aug. 2012 date.
M1 TDT has 6,034 kms and M1 TDT printed above and Sept. 2011.
Both gray background colums are for typical averages, just ignore them.
Motul X-Cess has 6,800 kms on top and Aug. 2012 date.
M1 TDT has 6,034 kms and M1 TDT printed above and Sept. 2011.
Both gray background colums are for typical averages, just ignore them.
08-28-2012, 07:01 PM
#24
Rennlist Member
Another +1 to Motul X-cess 5W40.
Our local Porsche head mechanic who is the only certified guy to rebuild Porsche engines here told me to absolutely skip Mobil1 0W40, specially on 997.1. He said many issues are caused by 0W40, and the reason it's used by Porsche is to lower the fuel consumption on our cars and to get better gov rating. He recommended Motul X-cess 5W40.
Having said that, Porsche wouldn't approve an oil that causes problems during warranty. So, for anyone who doesn't track their cars, do their maintenance on time, and like to have some better MPG, the Mobil 0-40 is a great oil, while all Porsche approved ones are find.
Our local Porsche head mechanic who is the only certified guy to rebuild Porsche engines here told me to absolutely skip Mobil1 0W40, specially on 997.1. He said many issues are caused by 0W40, and the reason it's used by Porsche is to lower the fuel consumption on our cars and to get better gov rating. He recommended Motul X-cess 5W40.
Having said that, Porsche wouldn't approve an oil that causes problems during warranty. So, for anyone who doesn't track their cars, do their maintenance on time, and like to have some better MPG, the Mobil 0-40 is a great oil, while all Porsche approved ones are find.
08-28-2012, 07:12 PM
#26
Porsche requires that the cam wear during 203 hour test does not exceed 10 microns. Wheter the wear is 3 microns (as an example) for one oil or 9 microns for another, both oils pass the test all other things being equal.
Which one would you like to use in your car?
08-29-2012, 01:23 PM
#27
Is Castrol Synthetic ester-based? What are good alternatives that are not ester-based? I like to run 5-40w not 0-40w due to the IMS issue.
It is a fine oil for your car's engine. Really, do you think Porsche would fill these engines from the factory with a crappy oil and then stand back and warranty the engine for 50K miles?
If an oil is no good, the engine will not need 50K miles to tell you... more like 500 miles, if that many miles.
Of course you can run any oil in your car's engine you want, but my advice is if you can't or don't want to run Mobil 1 0w-40 oil switch to another yet approved oil.
The Motul oil, at least some of the oils offered by Motul, are approved and thus as good as any other approved oil.
A word pr two of warning though.
IIRC Motul is a Group V oil, which means among other things it is an ester based oil.
My info is ester has a tendency to cause oil seals to swell. This has a couple of side affects. One it increases friction... do not laugh. In some models, GT2 at least, Porsche fits low tension seals for the last bit of HP, so the increase in friction is real.
Will you feel it?
Heck no.
But increased friction means the seal can wear faster. Will this seal then leak when it would not have otherwise leaked, or leak sooner?
No one can say.
If one ever switches away from an ester based oil the seals will shrink some and otherwise oil tight seals could begin to leak.
So my take is a switch to Motul (an ester based oil at any rate) is a one way path.
Sincerely,
Macster.
If an oil is no good, the engine will not need 50K miles to tell you... more like 500 miles, if that many miles.
Of course you can run any oil in your car's engine you want, but my advice is if you can't or don't want to run Mobil 1 0w-40 oil switch to another yet approved oil.
The Motul oil, at least some of the oils offered by Motul, are approved and thus as good as any other approved oil.
A word pr two of warning though.
IIRC Motul is a Group V oil, which means among other things it is an ester based oil.
My info is ester has a tendency to cause oil seals to swell. This has a couple of side affects. One it increases friction... do not laugh. In some models, GT2 at least, Porsche fits low tension seals for the last bit of HP, so the increase in friction is real.
Will you feel it?
Heck no.
But increased friction means the seal can wear faster. Will this seal then leak when it would not have otherwise leaked, or leak sooner?
No one can say.
If one ever switches away from an ester based oil the seals will shrink some and otherwise oil tight seals could begin to leak.
So my take is a switch to Motul (an ester based oil at any rate) is a one way path.
Sincerely,
Macster.
08-29-2012, 02:24 PM
#29
Racer
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to the OP, you can get this in a 4 pack at amazon for $146 with free shipping..
http://www.amazon.com/dp/B004LEZQ3M/..._df_B004LEZQ3M
http://www.amazon.com/dp/B004LEZQ3M/..._df_B004LEZQ3M
08-29-2012, 04:44 PM
#30
[QUOTE=djantlive;9656889]is the 300v better than the 8100?
300V is for racing/short term fill only. Additives break down quickly. Use street formulations ie xcess or xcell w the former being the latest and greatest.
300V is for racing/short term fill only. Additives break down quickly. Use street formulations ie xcess or xcell w the former being the latest and greatest.