13 replies to this topic

[flo]

Hello,
I know that the topic has already been discussed many times but in France we can't get the same motor oil in USA (brands and grade).

We have the following :
MOBIL 1 PEAK LIFE 5W50
CASTROL EDGE 10W60 : EDGE SPORT and EDGE TFT (not sure about the difference, TFT is newer than SPORT ???)
MOTUL 300V 5W40
MOTUL 300V 10W40
MOTUL 300V 15W50

The MOBIL 1 is made with POLYOLEFIN.
The CASTROL is enriched with ester.
The MOTUL 300V is double ester technology

The french specs are joined to this topic.
The spec are similar to those of the USA.

How can I optimize the use of the different oil based on the use of my car ?

The Shelby is not my daily car.
The temperature may drop to 32°F in winter and may increase up to 95°F in summer.
The range of the temperature is large.
I will go to the track during the good season.

What will be your recommendations ?

For the MOTUL 300V, if the winter number is too high (15W), can I start the engine safely if I wait for a few minutes before driving ?
If I use a high quality oil 5W40 or 10W40, the high number (40) for hot temp operation is lower than the Ford spec (50).
The others topics explain that the Motorcraft oil degrades rapidly after 2000 miles (the 5W50 becomes a 5W30)
On the other hand the high number (hot temp) for a high quality oil 5W40 or 10W40 stays at 40.
So a 15W50 will be very good for hot temp but what about the cold start.

During cold season, must I use a 5W40 and during warm season must I use a 15W50 or what is best to do ?

What do you think ?

Thank you for your help and advices.
I hope my english is understandable.

Attached Files

•  MOTUL 300V 15W50.pdf   20.4K   1 downloads
•  MOTUL 300V 5W40.pdf   20.36K   1 downloads
•  MOTUL 300V 10W40.pdf   20.25K   2 downloads
•  Mobil 1 Peak Life 5W-50 US.pdf   22.48K   4 downloads
•  Mobil 1 Peak Life 5W-50 FR.pdf   24.62K   1 downloads
•  Mobil 1 Peak Life 5w50 info.doc   110.5K   0 downloads
•  CASTROL EDGE FST 10W60.txt   162bytes   1 downloads

Edited by flo, 25 February 2012 - 06:24 AM.

[UnleashedBeast]

I have discussed this with other european members though email. The best choices, hands down, is Motul 300V 5W-40 or 10W-40.

5W-40 is the better choice in winter months, and daily driving duties.

10W-40 is the better choice during the summer months, and for long session road racing.

However either lubricant is suitable for year round performance in your climate. Since you don't daily drive this car, Motul 300V 10W-40 is the winner.

Avoid any 50 grade lubricant at all cost, especially a higher end true synthetic 50 grade that wont shear like Motorcraft. Your oil pressure will be much too high for the intended application, despite what many members here at Team Shelby believe to be true about the 5.4L supercharger Ford Modular. You will sacrifice efficiency, power, performance, and mpg.

Edited by UnleashedBeast, 25 February 2012 - 06:56 AM.

[flo]

Thank you
If I understand what you say :
The high number 50 for MOTUL 300V 15W50 and 60 CASTROL 10W60 will stay at this value unlike the MOTORCRAFT 5W50 which becomes a 5W30 after 2000 miles, isn't it ?
The oil pressure will be too high with a 15W50 and a 10W60, isn't it ?
With what oil will I sacrifice efficiency, power, performance, and mpg (on the other hand what about the engine protection) ?
Thanks again

[UnleashedBeast]

flo, on 25 February 2012 - 10:40 AM, said:

Thank you
If I understand what you say :
The high number 50 for MOTUL 300V 15W50 and 60 CASTROL 10W60 will stay at this value unlike the MOTORCRAFT 5W50 which becomes a 5W30 after 2000 miles, isn't it ?
The oil pressure will be too high with a 15W50 and a 10W60, isn't it ?
With what oil will I sacrifice efficiency, power, performance, and mpg (on the other hand what about the engine protection) ?
Thanks again

Correct, true synthetic 50 will shear much less/slower than Motorcraft 5W-50, and normally remains a 50 grade lubricant.

I have no idea if Castrol 10W-60 is a true synthetic, it's possible that it could be highly refined petroleum. However, being a European blend, more than likely it's the real deal. Europe doesn't allow refined petroleum to be advertised as "synthetic" like they do in the Unites States. No matter, it's much too viscous for this engines application.

All your other statements are correct as well.

Edited by UnleashedBeast, 25 February 2012 - 11:21 AM.

[GT//500//07]

Since we're on OIL subject what would you reccomend for a guy that CRUISES 95% of the time and the ODD WOT for maybe a 1/4 mile stretch when merging on the highway! It's NEVER bean TRACK or 1/4 mile driven, its driven in a 30F to 90F in peak summer months, no WINTER driving its parked.

I'm asking because I've been reading a BUNCH of different post and all seem to say that a TRUE SYN 5W-50 is to THICK and produces to high of oil pressure at cruising speeds and too low at idle...I see that a lot of people seem to reccomend AMSOIL, REDLINE or ROYAL PURPLE 10W-40 as the best all around, I have REDLINE 5W-50 just waiting for me to pour in the next few days but now I'm not so sure if its the proper oil to use for my kind of driving, can I blend it with another REDLINE 5W-30 or 10W-30 to thin out the 50 grade, any input or reccomendations on your part would be greatly appriciated...My GT500 is a 2007 BONE STOCK! with 9000 miles.

[UnleashedBeast]

Since your car is 100% stock, you have the 192* thermostat. All 5W-50 lubricants may seem like they are less viscous when cool, but actually, they perform just like a 20W-50 in non-sheared virgin form. So many members here are mislead by the first number being "5W" thinking it better on cold start ups. Well, that's incorrect. This holds true for Motorcraft, Castol, and Red Line 5W-50.

True synthetic (PAO group IV) 10W-40 lubricants are less viscous is virgin form than all three listed 5W-50 lubricants between the temps of 0*C (32*F) and 100*C (212*F). Motorcraft rapidly shears to a light 40 grade lubricant in 2,000 miles or less, and uses a highly refined petroleum base stock (group III). Group III base stock will thicken as it cools at a steeper rate than group IV true synthetics will.

Royal Purple 10W-40 - try to find the older bottle stuff that was API SL or the new HPS forumulation.

Red Line 10W-40

Amsoil AMO 10W-40

You can buy Amsoil @ dealer cost and since they have two distribution warehouses in Canada, no border fees or shipping delays.

Preferred Customer

[flo]

Hi,
I would like to understand the difference between the MOTUL 300V 5W40 and 10W40
The specs numbers are

10W40
HTHS viscosity : 4.19
Cst @ 100°C : 14.0
Cst @ 40°C : 89.5
Viscosity number : 161
TBN : 11.7

5W40
HTHS viscosity : 4.53
Cst @ 100°C : 13.1
Cst @ 40°C : 74.2
Viscosity number : 180
TBN : 10.3

I'm surprise...

If I am not wrong ...
The HTHS of the 5W40 is higher than the 10W40, so for the 5W40 the engine protection is better but the performance is least than the 10W40
The viscosity number of the 5W40 is higher than the 10W40 so the the viscosity of the 5W40 is more stable

On the other hand
the cst @ 100°C is better on the 10W40 than the 5W40
The TBN is better on the 10W40 than the 5W40

Wich one is the best for track use ?
Wich one is best for aggressive street use ?
Wich one is best for aggressive street use during wide temp range season 50°F in the morning and 86°F in the afternoon ?

Thank you very much for your help!

[UnleashedBeast]

Either Motul formulation with serve you well, but there big difference will be shear stability.

10W-40 will maintain it's virgin 100*C viscosity better than the 5W-40. For long session road racing in the summers heat, I would take the 10W-40 version any day.

Having a fluid that doesn't thicken as much isn't a concern to me until you are constantly cold starting the car in less than 0*C (32*F) weather. Since you didn't list that as an option, I choose the 10W-40 for any application you have listed above.

Edited by UnleashedBeast, 15 March 2012 - 09:16 PM.

[leftlane]

I had the same problem here in Germany, especially with the high speed and temp. I asked a very well reputated importer of american cars, GEIGER in Munich. They told me that they use Castrol 10W-60 on the GT 500.

So do I now.

Regards

Kurt

[UnleashedBeast]

leftlane, on 15 March 2012 - 11:29 PM, said:

I had the same problem here in Germany, especially with the high speed and temp. I asked a very well reputated importer of american cars, GEIGER in Munich. They told me that they use Castrol 10W-60 on the GT 500.

Holy oil pressure Batman!

[leftlane]

Do you mean that GEIGER CARS at Munich is wrong with their choice of 10W-60??

As FORD does not sell the Mustang in Europe there is no official answer to the oil question.

[flo]

UnleashedBeast, on 15 March 2012 - 09:13 PM, said:

there big difference will be shear stability.

10W-40 will maintain it's virgin 100*C viscosity better than the 5W-40. For long session road racing in the summers heat, I would take the 10W-40 version any day.

I choose the 10W-40 for any application you have listed above.

Hello,
Could you explain the meaning of the viscosity index and HTHS ?

Why the 10W-40 numbers are lower than the 5W-40 ?

10W40
HTHS viscosity : 4.19
Viscosity number : 161

5W40
HTHS viscosity : 4.53
Viscosity number : 180

On the other hand the 10W-40 Cst @ 100°C are higher than the 5W-40 ?

10W40
Cst @ 100°C : 14.0

5W40
Cst @ 100°C : 13.1

Thank you

[Squidly]

I use Motul Sport 5w50 here in Blimey - for about 11,000 miles now with ZERO concerns about oil pressure.  Should be easy enough to find en France - it's manufactured there!  UOA's are light-years better than the knock-off Motorcraft pseudo-syn stuff.

Motul Sport "double ester" 5w50
PAO group IV
API SM, API CF
Viscosity grade SAE J 300  5W-50
Density at 20°C (59°F) ASTM D1298 0.845
Viscosity at 100°C (212°F) ASTM D445 17.9 mm²/s
Viscosity at 40°C (104°F) ASTM D445 107 mm²/s
Viscosity Index ASTM D2270 186
HTHS viscosity at 150°C (302°F) ASTM D4741 4.49 mPa.s
Pour point ASTM D97 -45°C / -49°F
Flash point ASTM D92 244°C / 471.2°F
TBN ASTM D2896  8.4 mg KOH/g

MOTUL - 119 Bd Félix Faure - 93303 AUBERVILLIERS CEDEX - BP 94 - Tel : 33 1 48 11 70 00 - FAX : 33 1 48 33 28 79 - Web site : www.motul.fr

http://www.quickfds....0964-013691.pdf

Edited by Squidly, 30 April 2012 - 11:20 AM.

[UnleashedBeast]

Sorry for the slow response time. For some reason, I do not get email updates when someone replies to a thread I have subscribed to.

leftlane, on 19 March 2012 - 01:50 AM, said:

Do you mean that GEIGER CARS at Munich is wrong with their choice of 10W-60??

As FORD does not sell the Mustang in Europe there is no official answer to the oil question.

Very wrong. Unless you are doing some serious extended session road racing, that viscosity is overkill for the GT500. Nothing more than a true synthetic 10W-40 is required for this car.

flo, on 20 March 2012 - 07:27 AM, said:

Hello,
Could you explain the meaning of the viscosity index and HTHS ?

Why the 10W-40 numbers are lower than the 5W-40 ?

10W40
HTHS viscosity : 4.19
Viscosity number : 161

5W40
HTHS viscosity : 4.53
Viscosity number : 180

On the other hand the 10W-40 Cst @ 100°C are higher than the 5W-40 ?

10W40
Cst @ 100°C : 14.0

5W40
Cst @ 100°C : 13.1

Thank you

HT/HS = High Temp/High Shear = The viscosity of the lubricant at 150*C (300*F). Normally, you can consider this the temperature of a lubricant under serious demand (around the pistons).

Viscosity Index = The higher the number, the less the oil will thicken as it cools, yet maintain it's rated viscosity at operating temperatures. You have to be careful, some formulations with a really high VI number will actually shear more than a lubricant with a lower VI number. My lubricants of choice don't have very impressive VI numbers, but that's also because I have no need for cold flow performance living in the South United States.

I see what you are referring to about HT/HS being higher on 5W-40 yet cSt is lower. It has to do with VII (Viscosity Improver Polyers) or possibly variations in the base stock. VII are what keep a lubricant from thinning past a certain grade when it's at temperature. They expand to maintain a thicker viscosity than the base stock itself could provide. This creates a higher Viscosity index. The negative is, VII polymers shear (get used up) rapidly. The lubricant will naturally return to its native viscosity.

Edited by UnleashedBeast, 12 May 2012 - 04:37 PM.