Changing the oil


Xcentric

GT Owner
Mark II Lifetime
Jul 9, 2012
5,213
Myakka City, Florida
How long with MoTo keep this 3rd blend as the original 5w50 recommended for the Fgt is long gone.
Would you explain this please?

Has any failure been attributed to the current Motorcraft 5W-50?

I don't understand the video either. Should I get Fram filters as targets? Seems expensive vs. paper.
 
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Xcentric

GT Owner
Mark II Lifetime
Jul 9, 2012
5,213
Myakka City, Florida
So what “gaps in my knowledge of tribology” still remain?
Kirk_surrounded_by_Tribbles.jpg
 

MAD IN NC

Proud Owner/ BOD blah bla
Mark IV Lifetime
Feb 14, 2006
4,194
North Carolina
Simple Gary,

Cars first came out with "A" spec for the FGT and gold top bottles I believe. Same time a black top bottle "B" spec was released for the GT500. First step, A was discontinued ~6 yrs ago, we all ran the B, black top. Now as Beach posted the B has been changed....

To JC thrones position if you go to SVTforum there is endless data that shows the viscosity and breakdown point of all the oils. Based on this I choose Rotella over MoTo.

To date since the car was new (and for the last 8 oil changes) I will also claim I never had a problem with MoTo but I don't like the degrading or re-rating and I have also chosen to run Rotella in the stroked Mach 1, 65 vette w ZDDP additive and the 73 Eldo as other "experts" for the other cars the majority of them also run Rotella

Re Fram filter, do your own research but I will never use a Fram OIL filter! Air, gas - OK but never oil due to inferior quality and I'm sure they would make a great "re-usable" skeet target
 
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paul b

GT Owner
Nov 2, 2006
810
Oil pressure gauge worked o.k. before? Try another 20 seconds. If all you did was change oil and put new filter in shouldn't be a problem. Did you try to start engine, seems like next logical step. If no oil pressure within a few seconds shut down. After that the next thought is pressure sending unit.
 

BlackICE

GT Owner
Nov 2, 2005
1,415
SF Bay Area in California
A strait 50w oil would be the best after you add a oil tank heater and heat the oil to 160F before starting the engine. :lol
 

Scooter

GT Owner
Mark II Lifetime
Apr 15, 2009
166
OK, Advance auto has the Rotella T6 5w-40 oil and a Purolator L25247 filter I'm going to pick it up tonight is this good? Pick up 10 gallons correct?

Also the store owner didn't like when I told him I would use the Fram filter for skeet shooting! He was actually upset I think.
 
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Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,435
Greenwood, IN
Stick with the OE Motorcraft oil.

As Ice relates they did lower the amount of ZDP in the forumulatiion about 4 years ago and switched from a black plastic cap to a now current gold cap on the bottle. Bottle branding label was also slightly changed. The Ford WSS-M2C931-A specification (original) was rolled to a "-B" specification. The part number XO-5W50-QGT was not changed.

IMO, it is best to stick with the OE oil for both the engine and transaxle.
 

Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,435
Greenwood, IN
LOL!

The Trouble With Tribbles

Crap, how do I remember that....:facepalm:
 

Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,435
Greenwood, IN
Mike I understand your frustration.

Cars first came out with "A" spec for the FGT and gold top bottles I believe. Same time a black top bottle "B" spec was released for the GT500. First step, A was discontinued ~6 yrs ago, we all ran the B, black top. Now as Beach posted the B has been changed....
Don’t blame Ford for this one. It was the EPA’s doing by removing the ZDDP so to “reduce” catalytic converter fowling. Yea… Ford engineering was surprised as well and reran several engine tests to make sure the “B” version without the ZDDP was still acceptable for our engine’s durability. Original oil was black top bottle (WSS-M2C931-A) while the second release for both the GT and GT500 was gold cap (WSS-M2C931-B).

…but I don't like the degrading or re-rating and I have also chosen to run Rotella in the stroked Mach 1, 65 vette w ZDDP additive and the 73 Eldo as other "experts" for the other cars the majority of them also run Rotella.
Again Mike, this was mandated by the EPA. Our government at work for us. I don’t like it either. Do you run the ZDDP additive with the Rotella in the GT? I plan on continuing to use the Motorcraft oil whether “better” than others or not. My oil changes are usually dictated by time not mileage and rarely if ever get close to 3K miles per change, so is viscosity breakdown really a problem with this short interval. In my opinion, not really.

Also agree on your comments on Fram filters. I use the Mann/Motorcraft in the GT and do not use Fram oil filters in any vehicle I own.

What the heck is MoTo????:confused
 

Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,435
Greenwood, IN
pick up 10 gallons correct?
really?????
 

jcthorne

GT Owner
Aug 30, 2011
792
Houston
I want to avoid the whole oil debate on this forum. But, I will say I was not happy with the performance and oil anaylsis data I recieved on used Motorcraft 5W50. It shears to a MUCH lighter oil in less than 2000 miles. When drained at 3000, its roughly equivelent to a 5W30.

I switched to Rotella 5W40 full synthetic on the Shelby several years ago and the results were far better, more consistant oil pressures over the life of the oil and much improved analysis numbers. Running it now in my GT. Also already used it in 2 gen sets, a diesel pickup, our motorhome (Ford V-10) and the wifes Harley.

I don't wish to debate the subject, just letting t32b know there are other opinions and options out there. Just like we did not all leave the power train the way Ford built it, some found better service in higher spec fluids as well. YMMV.
 

Scooter

GT Owner
Mark II Lifetime
Apr 15, 2009
166
really?????
Aah ha OK how about 10 quarts!
 

2112

Blue/white 06'
Mark II Lifetime
Wasn't this Treatise on Viscosity posted in this thread somewhere or was that another thread?

Here it is, forgive the source; :wink

http://ferrarichat.com/forum/showthread.php?t=136052
 

Scooter

GT Owner
Mark II Lifetime
Apr 15, 2009
166
Sorry but I'm just checking I noticed two of the bottles I have one says "heavy duty engine oil" and the other says " heavy duty Diesel engine oil" all other description is identical
photo(12).JPG
 

Cobraguy

GT Owner
The debate will continue over which is the "best" lube......I have been using Rotella for decades in all of my cars, trucks, toys and I purchase several hundred barrels of it per year for use in all of my heavy equipment fleet units. We have all of our lube products tested at regular intervals for signs of premature wear or failure and after periodically comparing other "better" products head to head we always stick with the Rotella.
We have not had a diesel or gasoline engine run to failure in years ...in fact we regularly far exceed the manufacturers anticipated component lifespans and I am sure that a lot of my gas powered pickups are subject to extreme use and abuse. Although this positive experience may not prove that the Rotella product is the best for my fgt....I feel safe taking the gamble.
Just my 2 cents.......
 

PeakCompletions

Boost is an addiction...
Le Mans 2010 Supporter
Jan 6, 2007
1,414
West Texas
Great Tech info guys!

:cheers
 

jcthorne

GT Owner
Aug 30, 2011
792
Houston
The bottles with the words 'Heavy Duty Diesel Engine Oil' are the newer bottles. Same oil in either. They added the word Diesel to the package to get around the EPA mandate to lower quantities of ZDDP in engine oils. The mandate does not apply to oils labeled for use in diesel engines as they still require it.

Its a fine oil and rated for Gas and Diesel engines. Oil analysis have consistently shown the FGT engines really likes this stuff. It holds up for the full life of the oil change interval without viscosity breakdown and the wear metals are extremely low in the samples indicating very low wear. Oil analysis of the Motorcraft product currently available show otherwise.

Its even rated JASO MA2 for use in wet clutch motorcycles, a very demanding application.

And, just FYI, I get it delivered by 2nd day 'air' from Amazon for $21 a gal. (They actually ship ground from a warehouse here in Houston)
 
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BIGFOOT

GT Owner
Jan 18, 2012
724
Northeast
Why can't Ford offer the 5/50 Syn in a 5 quart?
The GT is 9.5q and the 302-S is 12.5q,...if you can believe it.
 

twobjshelbys

GT Owner
Jul 26, 2010
5,340
Las Vegas, NV
This new Amsoil product seems to meet the WSS-M2C931-C spec for FGT, Mustang, etc:

http://www.amsoil.com/shop/by-equip...ature-series-100-percent-synthetic-motor-oil/

APPLICATIONS
AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled vehicles. It is recommended for all domestic and foreign vehicles requiring any of the listed performance specifications:

5W-50 (AMR): API SN, SM...; Ford WSS-M2C931-C (Mustang)
 

2112

Blue/white 06'
Mark II Lifetime
I don't think I've seen the Joe Gibbs product mentioned anywhere. Does anyone have experience with this?

View attachment 34955

http://www.drivenracingoil.com/dro/fr50-5w-50-synthetichtml/
I have used both their Dino break in oil and their synthetic in my 600 inch Ford marine engines. It is damn fine oil.

I change often (every 12 hours) so I don't send it in for analysis since I am not pushing it to it's life limits. I have used Mobil 1 and Amsoil, the Gibbs holds it's viscosity even after 10-12 hours of punishing use between 212 and 270 degrees, much at the higher limits. I see dropping oil pressure after 8 hours with Mobil 1 and 10 hours with Amsoil.

They get around the ZDDP thing by not being legal for street use....or at least that was case.