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Does anyone know for sure what the difference is between spec. WSS-M2C931-A and WSS-M2C931-B? No one that sells oil knows (for sure) but of course all speculate it is just so Ford can make an extra four dollars per quart. Is there any chance of warranty trouble down the road from using A instead of B? If I took a sample of each to a lab could they tell which was which?
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2008 GT500 Build date 12-21-07 All options but nav and 1000 White with Black Stripes Didn't want the zit on the trunk but ended up with it anyway |
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OK, so the bottom line appears to be that the oil meets specs, just isn't approved by Ford?
Interesting that the cheaper oil is approved for the GT. Sounds like just another case of corporate greed.
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2008 GT500 Build date 12-21-07 All options but nav and 1000 White with Black Stripes Didn't want the zit on the trunk but ended up with it anyway |
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Don't sweat the small stuff.
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BVM Performance - where The Family shops for performance parts!! |
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spec a and spec b have the same part #, spec b is the updated version; I have used both in my car.........spec b is supposedly just a tad different from the spec a, I am sure for something pollution control related, but not enough to make a pragmatic difference. the referenced thread actually goes into quite a bit of detail, but presented with a choice at the dealer, go with spec b since it is a fresher package.
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I'm a real KCMO BadCat!................................ BadCats-Too Tough to Die!..........Too Nasty to Eat! 2007 GT500 White w/Blue Stripes Stage 2 With Some Bling Here & There Like My Lupara - Not a Precision Instrument; ![]() Rather a Tool of Great Power and Persuasion! |
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Fresher? I thought scientists say oil is millions of years old? ![]() .
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BVM Performance - where The Family shops for performance parts!! |
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Quote:
![]() there probably is no real issue with the shelf life, so if you really want to use the spec a, go for it........
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I'm a real KCMO BadCat!................................ BadCats-Too Tough to Die!..........Too Nasty to Eat! 2007 GT500 White w/Blue Stripes Stage 2 With Some Bling Here & There Like My Lupara - Not a Precision Instrument; ![]() Rather a Tool of Great Power and Persuasion! |
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BVM Performance - where The Family shops for performance parts!! |
I'm a real KCMO BadCat!................................

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Roush meets the -B Ford specand it's made by Valvoline. $7.99 @ Jegs
Also Altrom's BLU synthetic meets -B -- see page two of this PDF
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68fastback® ;-) "We hang the petty thieves and appoint the great ones to public office." --Aesop - "Diplomacy is the art of saying 'Nice doggie' until you can find a rock." --Will Rogers - "The problem with socialism is that eventually you run out of other people's money." --Margaret Thatcher - "A government big enough to give you everything you want, is strong enough to take everything you have." --Thomas Jefferson - "Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves." ... "Man is not free unless government is limited." ... "Republicans believe every day is the Fourth of July and the democrats believe every day is April 15." ... "The problem is not that people are taxed too little, the problem is that government spends too much." --Ronald Regan - "You cannot bring about prosperity by discouraging thrift. You cannot strengthen the weak by weakening the strong. You cannot help the wage earner by pulling down the wage payer. You cannot further brotherhood of man by encouraging class hatred. You cannot help the poor by destroying the rich. You cannot keep out of trouble by spending more than you earn. You cannot build character and courage by taking away mans initiative and independence. You cannot help man permanently by doing for them what they could and should do for themselves." --Abrahan Lincoln ![]() Of course we still want a DOHC alloy big block! ![]() Last edited by 68fastback; 03-26-2009 at 01:48 AM. |
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I remember hearing about the Roush... but this is the first I've seen it for sale. Thanks Danny! ![]() -
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Proud owner of a 2007 GT500 Convertible - 853/859 Black verts produced, 2674/2695 verts produced - Black, white stripe - Red accent leather interior, Nav, Sirius, Premier Trim pkg, Car cover - Shelby signed dash plaque - Sequential taillights - JLT Red Carbon fiber CAI, Evo Stage 2 tune, 2.6 pulley - JLT Red CF Radiator support and fuse box covers - Revan/C&R radiator & HE - Corsa 14311 axle back exhaust ![]() ![]() BVM Performance - where The Family shops for performance parts!! |
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Wow there is even a dealer right down the road from me. Thanks for the link!
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2008 Triple Black GT500 Convertible FRPP CAI/Tune, FRPP 'KR' mufflers, FRPP Short throw shifter, BMR LCA's Max Power = 518 Max Torque = 497 DynoJet 3/6/2010 __________________________________________ 1972 Mach 1. 351C with BOSS heads and intake, 2nd owner (thanks Dad!) Currently in need of serious restoration. ___________________________________________ "They call me the working man.....I guess that's what I am."
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...my pleasure
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68fastback® ;-) "We hang the petty thieves and appoint the great ones to public office." --Aesop - "Diplomacy is the art of saying 'Nice doggie' until you can find a rock." --Will Rogers - "The problem with socialism is that eventually you run out of other people's money." --Margaret Thatcher - "A government big enough to give you everything you want, is strong enough to take everything you have." --Thomas Jefferson - "Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves." ... "Man is not free unless government is limited." ... "Republicans believe every day is the Fourth of July and the democrats believe every day is April 15." ... "The problem is not that people are taxed too little, the problem is that government spends too much." --Ronald Regan - "You cannot bring about prosperity by discouraging thrift. You cannot strengthen the weak by weakening the strong. You cannot help the wage earner by pulling down the wage payer. You cannot further brotherhood of man by encouraging class hatred. You cannot help the poor by destroying the rich. You cannot keep out of trouble by spending more than you earn. You cannot build character and courage by taking away mans initiative and independence. You cannot help man permanently by doing for them what they could and should do for themselves." --Abrahan Lincoln ![]() Of course we still want a DOHC alloy big block! ![]() |
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JMHO
Nothing
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MY MOD LIST ![]() OK JUST 1 MORE MOD 'If the enemy is in range, so are you.' - Infantry Journal- |
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Interesting info for those who question "why synthetic" or have heard rumors as to why not to use it.
Motor Oil Myths -
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Proud owner of a 2007 GT500 Convertible - 853/859 Black verts produced, 2674/2695 verts produced - Black, white stripe - Red accent leather interior, Nav, Sirius, Premier Trim pkg, Car cover - Shelby signed dash plaque - Sequential taillights - JLT Red Carbon fiber CAI, Evo Stage 2 tune, 2.6 pulley - JLT Red CF Radiator support and fuse box covers - Revan/C&R radiator & HE - Corsa 14311 axle back exhaust ![]() ![]() BVM Performance - where The Family shops for performance parts!! |
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I like that they even treated the source/base-stock question honesty since source doesn't matter.
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68fastback® ;-) "We hang the petty thieves and appoint the great ones to public office." --Aesop - "Diplomacy is the art of saying 'Nice doggie' until you can find a rock." --Will Rogers - "The problem with socialism is that eventually you run out of other people's money." --Margaret Thatcher - "A government big enough to give you everything you want, is strong enough to take everything you have." --Thomas Jefferson - "Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves." ... "Man is not free unless government is limited." ... "Republicans believe every day is the Fourth of July and the democrats believe every day is April 15." ... "The problem is not that people are taxed too little, the problem is that government spends too much." --Ronald Regan - "You cannot bring about prosperity by discouraging thrift. You cannot strengthen the weak by weakening the strong. You cannot help the wage earner by pulling down the wage payer. You cannot further brotherhood of man by encouraging class hatred. You cannot help the poor by destroying the rich. You cannot keep out of trouble by spending more than you earn. You cannot build character and courage by taking away mans initiative and independence. You cannot help man permanently by doing for them what they could and should do for themselves." --Abrahan Lincoln ![]() Of course we still want a DOHC alloy big block! ![]() |
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