Engine Oil Specification in 2006 Owner's Manual


ViperJoe

GT Owner
Mark II Lifetime
Aug 17, 2006
1,305
Washington Crossing, PA
The 2005 Owner's Manual states that engine oil must meet Ford Specification WSS-M2C931-A. Is this consistent with what is indicated in the 2006 Owner's Manual or does it also indicate WSS-M2C931-B?

Thanks .....
 

Empty Pockets

ex-GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Oct 18, 2006
1,362
Washington State
The 2005 Owner's Manual states that engine oil must meet Ford Specification WSS-M2C931-A. Is this consistent with what is indicated in the 2006 Owner's Manual or does it also indicate WSS-M2C931-B?

Thanks .....


Stick in Motocraft 5-50 synthetic and Bob's yur uncle...

(Krymuny. We already KNOW there are a lotta errors in th' stoopid service manuals as it is. Why waste time stewin' over MORE stuff!)
 
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Craig

GT Owner
Mark II Lifetime
Mar 14, 2006
174
San Diego
Castrol Syntec

Syntec meets the Ford requirement WSS M2C931-A, as stated on the bottle. AND, it is $5.00 cheaper than the Ford stuff where I live.:biggrin

Craig
 

Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,545
Greenwood, IN
FGT Oil Recommendation

Echo Empty Pockets!!!!!

Craig, if you can afford a FGT you can afford to put the correct Motorcraft oil in her. Put the Castrol in your (avatar) Mustang.

Many, many, many previous Forum posts on these fluid topics...

Buck up and pay the premium for the Motorcraft oil in our $36,000 engine. Why bother wondering if "this" oil or "that" oil meets the design requirements only to save a few bucks and enable a Walmart purchase....*?!
 

BlackICE

GT Owner
Nov 2, 2005
1,416
SF Bay Area in California
Echo Empty Pockets!!!!!

Craig, if you can afford a FGT you can afford to put the correct Motorcraft oil in her. Put the Castrol in your (avatar) Mustang.

Many, many, many previous Forum posts on these fluid topics...

Buck up and pay the premium for the Motorcraft oil in our $36,000 engine. Why bother wondering if "this" oil or "that" oil meets the design requirements only to save a few bucks and enable a Walmart purchase....*?!

All this oily talk. I used you be a stickler for changing oil often with what I thought was the best stuff. In retrospect, I don't put many miles on my cars. Then on some of my older beater cars that I hardly ever changed the oil and put the cheap dino oil in it about once a year, but less than 5000 miles of use. The cars still ran fine and haven't had any oil related failures whatsoever! I have a friend that told me about his new Mustang his father bought him for college, he put 35K on the car in 3 years and told me he never changed the oil or filter! He only topped off the oil level when it was low. The car still ran fine. I would hate to look inside the block though.

If Castrol Syntec meets the Ford spec and you shouldn't have any problems using it in the GT. As for the change interval on 1 year recommend by Ford that should be fine for those that don't drive the car too hard and put less than 10K miles at year on the car. The primary reason for oil failure is the breakdown of the additive package and oxidation. Since the GT has 12 quarts of oil and it is synthetic it should easily handle the recommend change interval. You can pay more and do it more often, but I don't think that will make your engine last longer.

As for the engine being 35K. That is a fully dressed engine with a Supercharger, injectors, power steering pump, A/C compressor, dry sump tank, etc. The block is only $2795, and the complete heads are $1500 each. You can by pistons, connecting rods, rings, bearings, etc at costs comparable to what you would pay for a hopped up modular Mustang engine. So rebuilding the GT engine is not as bad as it appears. Compare this to damaging a Ferrari engine!

The engine is the least expensive thing to repair on this supercar! Now body damage, those prices are in the Ferrari range from what I can see!
 
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analogdesigner

GT Owner
Mark IV Lifetime
Nov 15, 2005
950
San Clemente, CA USA
 

BlackICE

GT Owner
Nov 2, 2005
1,416
SF Bay Area in California

Thanks, Jay.

Since Conoco Phillips makes the Ford labeled oil, I feel safe assuming this stuff is the same. Now you have 3 choices for oil meeting the Ford specifications.

1. Ford
2. Conoco Phillips
3. Castrol Syntec

Each owner can make up there own mind about what type of oil to use. Some owners buy the Ford oil filter for $32, while others buy the same Mann filter for $4. I don't think the cost difference matters to any GT owner, but I would bet the reason many owners can buy a GT is they don't indiscriminately throw money away for the same product!

Here is a link to find where to buy #2.

http://lubricants.conocophillips.com/locator/usa.asp?div=LP&av=
 

analogdesigner

GT Owner
Mark IV Lifetime
Nov 15, 2005
950
San Clemente, CA USA
Thanks, Jay.

Since Conoco Phillips makes the Ford labeled oil, I feel safe assuming this stuff is the same. Now you have 3 choices for oil meeting the Ford specifications.

1. Ford
2. Conoco Phillips
3. Castrol Syntec

Each owner can make up there own mind about what type of oil to use. Some owners buy the Ford oil filter for $32, while others buy the same Mann filter for $4. I don't think the cost difference matters to any GT owner, but I would bet the reason many owners can buy a GT is they don't indiscriminately throw money away for the same product!

Here is a link to find where to buy #2.

http://lubricants.conocophillips.com/locator/usa.asp?div=LP&av=
BlackICE, nice find! Jay
 

Indy GT

Yea, I got one...too
Mark IV Lifetime
Jan 14, 2006
2,545
Greenwood, IN
Conoco Oil

Agreed, Black Ice, the Conoco/Phillips link is a good piece of information and I too would feel since Conoco/Phillips makes the 5W-30 oil for Ford and this product meets the Ford spec, it is equivalent. I would use the Conoco product in my car just as I have used the Mann filter. Again the Mann filter is exactly the same as is packaged in the Motorcraft box. Thanks very much for providing the finders link!

My point on the engine price is that it is a "significant" chunk of change. If you want to piece-price the engine down to each component price, fine, but our engine cost is MORE (relatively) than the typical crate engine you buy at your local Ford dealer. Maybe some owners have an engine shop facility and can go buy just a block, crank, bearings, heads etc and disassemble and reassemble the engine themselves thereby "saving" money. (I would venture most of us do not) But why bother?

As elequently summarized above, I think the most appropriate choices are:
Filters- Motorcraft or Mann (they are the same)
Oil - Motorcraft or Conoco/Phillips (they appear identical)

We all can make choices based on personal preference. Thanks to all for their opinions.